高中英语人教版必修3+Unit+4+Astronomy：the+science+of+the+stars+period4+教案1.doc
人教新课标高一英语必修三教案：Unit4Astronomy全单元.docx
Unit 4 Astronomy: The Science of The StarsTeaching aims:1.Enable students to improve their listening skills and reading ability.2.Enable students to understand the development of gravity and how gravityaffects us in different times and places.3.Arouse students ’ interest to search for the mystery of space.Emphasis:1.Words and expressions: gravity, float, cheer up, now that, break out, etc2.Astronomic knowledge like gravity and black hole.Difficulties:1.Help the students to understand the development of gravity.2.Help the students to know how gravity influences us.Teaching methods:skimming, scanning, discussing.Teaching aids: tape recorder, a projector and a computer.Teaching procedures:Period one ReadingStep 1. PresentationT:Hello, everyone!odayT we ’ ll come to Unit 4 Astronomy. Before that I have a question: Where do we come from? Or we can say: Who are our ancestors?S1: Monkeys!S2: Beijing Ren who lived many years ago.S3: Reptiles.S4: Mammals.S5: Amphibians.S6: Dinosaurs.T: Very good! Can you put them in right order?S7: Amphibians, Reptiles, Dinosaurs, Mammals, Beijing Ren.T:Do you know what it was like before life appeared on earth?S8: It was full of water, perhaps.T: Before that, what was it like?S9: Sorry, I don’ t know.T: Do you want to get more information? Today we’ ll learn something about How Life Began the Earth. Turn to Page 25. Let’ s come to Warming up first.Step 2. Warming up1.Read the three questions, while the students listen and follow.2.Give the Ss several minutes to discuss the questions.3.Collect answers from the whole class.4.Check the answers while discussing.T:I ’ ll read the three questions for you. You should listen to me carefully. (If students don howto discuss, show them an example.) For example, medicine. When someone gets seriousillness, he will go to the hospital. The doctor will examine him. He will take his temperature, measurehis blood pressureand give him an X-ray, or a CT. For the whole process of the examination, what kind of science has been used?S1: Biology.S2: Chemistry.T:So we can say medicinecombinesbiologyand chemistry.What aboutbiochemistryand geophysics?S3: I think biochemistry combines biology and chemistry.S4: Geophysics combines geology and physics.T:What about astronomy?S5: Physics.S6: Mathematics.T:Very good. We should know that astronomy is a multidisciplinary subject and if we want todo some researchon it, we shouldknow many sciencesubjectsrelatedto it. Now discussthesecond question:Whatdo we mean when we say we are studying a subject scientifically? Or what’ s t attitude towards science?S7: We should be objective, not superstitious.T: What ’ s the correct way to prove a scientific idea?S8: We should design experiments to test it for several times.S9: Then we can analyze the results and draw a conclusion at last.T:Let ’ s sum up the answers. To study a subject scientifically, we must try to be objective. Inorder to test our idea, we shoulddesign experiments,then analyzethe results and draw a conclusion. Now let’ s talk about the third question.What are the most important skills we need to be real scientists?S10: We should be very careful.S11: Be objective and logical.S12: We should be wise enough to design an experiment and write the reports clearly.S13: We should be able to draw conclusions from the experiments and not imposeconclusions on the data.T: I think you have done great work. From the discussion we know that it’ s not e scientist. So you should work harder if you want to be a scientist.Step 3. Pre-readingGet the Ss to discuss the questions on Page 25 with their partners. Then ask the Ss to tell their stories. Encourage the Ss to tell different stories. If they don’ t know any, tell th T:Nowplease look at the slide show. And discuss these questions with your partners. ThenI ask some students to tell us their stories. Are you clear?Ss: Yes, Sir/Madam.1. Do you know each religion or culture has its own ideas about the beginning of the universe? Please give an example if you know.2. Do you know what a scientific idea is?After the Ss ’ discussion, teacher says the following.T:Now who ’ d like to tell us a story? Volunteer!S1: Let me try. In China, we all know that Pangu separates the sky from the earth.T:Can you describe the story in details?S1: Sorry, I can’ t remember clearly.T:Who can? Nobody? Now I ’ ll tell you. Look at the screen.Step 4. ReadingScanningGet the Ss to read the passage quickly and accurately and meanwhile helpSs thetoform agood habit of reading.Teachergives the Ss a coupleof minutesto look throughthe wholepassage. Tell the Ss to read the text silently and then ask some detailed questions aboutthe text on the slide show with their partners. Teacher shouldencourage the Ss to expresstheir ideas.T: We ’ re going to learn a passage about how life began on the earth. Now let ’ s show. Read the text quickly and find answers to the following questions. Show the questions on the screen.1.What was there on the earth before life could begin?2.Why do scientists think there has never been life on the moon?3.Why did animals first appear in the seas?4.Why did green plants help life to develop?5.Why were mammals different from other animals?T: Now who can answer the first one?S1: Water vapour, carbon dioxide, oxygen, nitrogen and other gases.T: What about the second one?S2: Because there is no water on the moon.T: What about the third one?S3: Because water allowed the earth to dissolve harmful gases into the oceans and seas.T: The fourth one?S4: Becausegreenplants can takecarbondioxidefrom the atmosphereand fill the airwith oxygen.T: What about the last one?S5: They were different because they produced their young from within their bodies.T: Well done! Now turn to Page 26 Comprehending1, I think you may continue to read it againto get more details.SkimmingIn this part, Ss will read the text again and then finish Part1, 2 and 3.T:Now please skim the passage fast to finish Part1. Then we will check the answer.Key to Part1: BCBBT:Skim Paragraph 2, 3 and 4, and finish Part 2 and 3.Key: DBIGEHACFJT:For Part 3, discuss them with your partner.T:Why is it wrong in films and stories to show dinosaurs and people together?S:Because dinosaurs died out long before human beings developed on the earth.T:Do you agree with him?S:Yes.T:What about the answer to the second question?S:They are the cleverest animals because they have larger brains than any other creatures on the earth so far.T:Excellent job! I ’ ll check how much you have learned about the passage. Step 5. ListeningListen to the tape for the students to follow and have further understanding of the passage. T:Read after the tape, then answer me some questions with your book closed.Play the tapeT:How did water come into being on the earth?If one student can’ t answer completely, ask two or three or more students.Ss: The explosion of the earth produced water vapor, which turned into water when the earth cooled down.T:Why is water important on the earth?Ss: Because water allowed the earth to dissolve harmful gases into the oceans and seas. T:No.3, finish the following form.1 small plants in2water3 green plants on land4insects(on land)576 forests89Key to the exercise:2.shellfish and all sorts of fish5.amphibian(on land and in water)7.reptiles (on land) 8.dinosaurs(on land) 9.mammals(on land)T: That’ s all for this passage. Now let’ s deal with some language points. ExplanationT: Turn to Page 25. Let’ s look at the sentences:1.It exploded loudly with fire and rock, which were in time to produce the water vapour. which leads non-restrictive attributive clause.in time: sooner or later;eventually I ’ ll see him in time.in time (for sth. /to do sth.): not lateShe will be back in time to prepare dinner.in / out of time: in/not in the correct time Theaudience clapped in time to the music.2.Nobody knew that it was going to be different from other planets going around the sun. be different from: not like someone or something else in one or more waysNote: We can use very, much, quite, entirely, totally to modifydifferent City life is quite different from country life.going around the sun is-ing form that serves as attributive.Men breaking the law will be punished.Can you see the girl dancing with your boyfriend?3.Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.to come: serves as attributiveShe is the last person to do such a thing.depend on: something might only happen or be true if the circumstances are right for it Our success depends on whether everyone works hard or not.4. Walking does need a bit of practice now that gravity has changed.now that: because of the fact thatNow that I’ m free, I can enjoy music for a while.Nowthat you’ ve grown up you can decide it yourself.Passage AnalyzingChart of the textHow life began on the earthwater 1 small plants in water2 shellfish and all sorts of fish4 insects (on land)4 insects(on land)5 amphibians (on land and in5 amphibians(on land and inwater)7 reptiles (on land)8 dinosaurs (on land)9 mammals (on land)Text RetellingRetell the text using about 100 words.Step 6. HomeworkRetell the passage according to the form.Remember important language points.3 green plants on land6forests10.small clever animalswith hands and feet11.humanPeriod two Extensive reading Step 1Show some pictures of the astronauts in the spaceStep 2Read the passage and fill in the formStep 3 Language pointsst month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer.He couldn ’ t run quickly enough to catch up with the cat.2. Then we were off.be off = set offI am off today.We are off today.3get close to靠近，接近，指动态变化be close to距 ......近，指状态4.But when I tried to step forward I found I was carried twice as far as on the earth andfell over.1). “ A + be倍数+ + as +形容词原级 + as + B ” .This tree is three times as tall as that one.2).“ A + be倍数+ +形容词比较级+ than + B”The number of students in our school is three times larger than that in theirs.3).“ A + be倍数+ + the +名词(size, length, amount) + of + B”The newly broadened square is four times the size of the previous one.6.We watched, amazed as fire broke out on the outside of the spaceship as theearth increased.break out1)战争爆发2)发生争吵3)(火灾 )发生7.cheer up; cheer sb. up感到高兴振奋8.masses of 许多，大量9.get the hang of熟悉 ,掌握 ,理解10.exhausting (sth); exhausted (sb)Step 4 HomeworkCollect passages about gravity.Prepare for speaking.Period three Language Study Step 1. RevisionTranslate the following sentences1.你迟早会成功的。
高中英语 Unit 4 Astronomy the science of the stars教案 新人教版必修3
Unit4一、根据句意填入单词或短语的正确形式1. The professor has brought in a good （系统）of teaching language from abroad.2. There are many t about the origin of life.3. Children should not be allowed to watch v movies.4. I believe the affair is h to the company.5. The old lady e only on coffee and bread.6. She listened with a p expression on her face.7. The moon’s p on the sea causes the waves.8. I had intended to catch the early train, but I didn’t get up (及时)9. Why do you want to kill the hens that （下蛋）every day?10. Many women plan to g babies this year.11. Doctors say many diseases can be p spreading by washing our hands.12. I stayed up last night, so today I can’t c .13. N you have grown up, you should not depend on your parents.14. Do you know when the Second World War b ?15. W for the cars when you cross the street.二、Unit4 词汇串记Our geography teacher says the earth is only one of the planets of the giant . other planets, life on the earth, butlife’s origin is still a . Different and cultures have separate ideas. The teacher says it may be divided into four stages.The first stage is about how the universe began. A widely accepted can explain it. After the “Big Bang” , began to form and combine to create stars and other bodies. The second stage is how the earth formed. Between 4.5 and 3.8 years ago, clouds and dust in space settled into a solid . The earth became that it often exploded. The and water appeared. Water is a matter for life to exist on the earth. It also dissolves gases and acids. The third stageis about plants’ and animals’ appearance. At first, plants in the water appeared and . They produced , which encourages animals in the water to exist. Later, green plants on the land caused animals on the land to appear. They first and became babies. Later, mammals babies directly. The last stage is that humans became the most important animals on the earth. We put too much carbon dioxide in the to cause global warming. We musthow things will go and make laws to the earth becoming too hot. we have taken measures, we willsucceed . So let’s and work together.三、单项选择1. In a room above the store, where a party , some workers were busily setting the table.A. was to be heldB. has been heldC. will be heldD. is being held2. It we had stayed together for a couple of weeks I found we hada lot in common.A. was until; whenB. was until; thatC. wasn’t until; whenD. wasn’t until; that3. we’ll go camping tomorrow depends on the weather.A. IfB. WhetherC. ThatD. Where4. The top leaders of the two countries are holding talks in a friendly .A. stateB. situationC. atmosphereD. air5. As the busiest woman in Norton, she made her duty to look after all the other people’s affairs in that town.A. thisB. thatC. oneD. it6. ---How long are you staying?---I don’t know. .A. That’s OKB. Never mindC. It dependsD. It doesn’t matter7. It was raining heavily. Little Mary felt cold, so she stood to her mother.A. closeB. closelyC. closedD. closing8. Will you be home to see the children before they go to bed?A. on timeB. in timeC. at a timeD. at one time9. The festival has been a great success, last year when it rained nonstop.A. likeB. alikeC. unlikeD. dislike10. Measures have been taken to prevent the river from .A. having pollutedB. being pollutingC. being pollutedD. to polluted11. What are the differences between the American and Britain ofgovernment.A. systemsB. religionsC. barbersD. theories12. It is generally accepted that smoking is to our health.A. harmlessB. harmfulC. harmD. harmfully13. Try and a bit; life isn’t that bad!A. cheer upB. come upC. look upD. put up14. he said at the meeting surprised everybody present.A. ThatB. WhichC. WhatD. How15. Please these warning signs.A. take outB. bring outC. come outD. watch out参考答案：一、system; theories; violent; harmful; existed; puzzled; gravity; in time; lays eggs; give birth to; prevented from; cheer up; Now that; brokeout;Watch out二、solar systems; Unlike; exists; puzzle; religions; theory; broke out; Atoms; billion; existed; globe; violent; oxygen; fundamental; harmful; multiplied; oxygen; laid eggs; gave birth to; atmosphere; watch out; prevent from; Now that; in time; cheer up三、ADBCD CABCC ABABD。
人教版高中英语必修三Unit 4《Astronomy the science of the stars》word导学案1
第三册第四单元第一课时阅读导学案Book 3 Unit 4 Astronomy: the science of the starsWarming Up & ReadingLearning Goals:1. Arouse students’ interest to search for the myste ry of space.2. Develop Ss’reading ability.Step I: Lead inTask 1: Go over words about names of subject and scientists in these fields Hey. Do you like... Do you want to be an/a...biology(生物学) biologist(生物学家)chemistry chemist(化学家)Ph ysics physicist(物理学家)geography（地质学）geologist(地质学家）music musicianpolitics(政治) politician(政治家)astronomy(天文学) astronomer(天文学家）Task 2: Talk about something about astronomy.Here is the picture of the solar system.Can you locate (定位) the eight planets in the picture?Uranus Venus Earth Mars Mercury Jupiter Neptune Saturnsolar systemThey are : 、、、、、、、、Research in classRead the text book in Page 25 “How life begin on eart h”.Step 2 Thinking &Discussing(1)Scan and predict.What i s the passage about? It is about how on the earth.(2)Sk im and find the main idea of each paragraphPara. 1 The arrival of humans and their impact on the earth. Para. 2 The development of plants and animals on the earth. Para. 3 A widely accepted theory about the formation of the universe.Para. 4 The form ation (形成) of the earth.Para. 5 The importance of water for life.(2) Careful reading: read the text carefully,then fill in the chat of “ How lifebegan on the earth ”Step 4TestingTrue (T) or False (F).1. The earth appeared before the Big Bang happened.2. The original atmosphere consisted of nitrogen and oxygen.3. The main difference between the earth and other planets is that there is water on the earth.4. Life began in water and the n on land.5. Mammals appeared before the development of dinosaurs.6. Dinosaurs could give birth to young baby animals and produced milk to feed them.7. Human beings produce too much carbon dioxide which causes the global warming on the earth.8. According to the text, human beings would disappear in the end.Reading comprehension1.How were stars and other bodies created?A .Atoms combined to create them.B Clouds of dust combined to create them.C.Water combined to create them.D. Gases combined to create them.2.Which is the most important for life appearing on the earth?A.FireB.RockC.WaterD.Clouds3. It can be known from the passage that_____________.A.plants and animals appeared on the earth at the same timeB.plants appeared later on the earth than animalsC.early shellfish appeared earlier than plantsD..animals appeared later on the earth than plants4.How many years did dinosaurs exist on the earth?A.More than 140 billion yearsB..More than 140 million yearsC..More than 140 thousand yearsD..More than 140 years5.Why can the earth become too hot to live on?A.Small clever animals produce more heat.B..Small clever animals produce too much carbon dioxi de.C..Small clever animals don’t want heat to escape from the earth.D..Sm all clever animals like to live on a hot planet.。
人教版高中英语必修3Unit4 Astronomythe science of stars 教案15新
Unit4Astronomy:the science of stars教案Teaching aims:1. Talk about the science of stars2. Practise giving instructionsTeaching difficulties:1. Learn to use noun clauses as the subject2. Learn to write an essay to show your problems and the way to overcome them.3. Vocabulary: astronomy, atmosphere, violent, explode, surface, disappointed, gradually, cheer, mass, harmful, presence, in time, prevent …from… depend on, now that, get the hang of, break out Teaching procedures:The first period Intensive readingStep Ⅰ PresentationT: Hello, everyone! Today we will come to Unit 4, Astronomy. Before that I have a question: where do we come from? Or we can say: Who are our ancestors?S1: Monkeys!S2: Beijing Ren who lived many years ago.S3: dinosaurs…T: Very good! Do you know what it was like before life appeared on earth?S4: Full of water…Bs: I don’t know.T: Do you want to get more information?Ss: Yes, we do.T: Today we will learn something about how life began on earth. Turn to page 25. Let’s come to Warming up first.Step Ⅱ Warming up1. Read the three questions, while the students listen and follow.2. Give the students several minutes to discuss the questions.3. Collect answers from the class.4. Check answers while discussing.Step Ⅲ Pre-readingGet the students to discuss the questions on page 25 with their partners. Then ask the students to tell their stories. Encourage them to tell different stories, If they don’t know any, tell them some.T: Now discuss these questions with your partners. Then I will ask some of you to tell us your stories. Are you clear?Ss: Yes.a. Do you know each religion or culture has its own ideas about the beginning of the universe? Give an example if you know.b. Do you know what a scientific idea is?Read some stories to the students.Pangu separates the sky from the earth;The Biblical Account;India;Japan;Europe;…Step Ⅳ Reading1. ScanningGet the students to read the passage quickly and accurately and meanwhile help the students to form a good habit of reading. Give the students a couple of minutes to look throuth the whole passage. Tell them to read silently and then ask some detailed questions about the text. Encourage them to express their ideas.T: We are going to learn a passage about how life began on the earth. Now read the text quickly and then answer my questions.a. What was there on the earth before life began?b. Why do scientist think there has never been life on the moon?c. Why do animals first appear in the sea?d. Why do green plants help life to develop?e. Why were mammals different from other animals?Discuss the answers with the whole class.2. SkimmingIn this part, students will read the text again and finish part 1,2,3T: Now skim the passage fast to finish part1,2,3,4 Then we will check the answers together. Key to part 1: DBIGEHACFJDiscuss the rest with the students.Step Ⅴ ListeningListen to the tape for the students to follow and have further understanding of the passage. T: Read after the tape, then answer me some questions with your book closed.a. How did water come into being on the earth?b. Why is water important on earth?Step Ⅵ Language pointsT: Turn to page 25. Let’s look at the sentences:a. It exploded loudly with fire and rock, which were in time to produce the water vapour. Which leads non-restrictive attributive clause.in time: sooner or later; eventuallyI will see him in time.In time ( for sth/to do sth): not lateShe will be back in time to prepare dinner.In/out of time: in/not in the correct timeThe audience clapped in time to the music.b. Nobody knew that it was going to be different from other planets going around the sun.Be different from: not like someone or something else in one or more waysCity life is quite different from country life.c. Whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.To come: serves as attributiveShe is the last person to do such a thing.Depend on: something might only happen or be true if the circumstances are right for itOur success depends on whether everyone works hard or not.d. Walking does need a bit of practice now that gravity has changed.Now that: because of the fact thatNow that I am free, I can enjoy music for a while.Now that you have grown up, you can decide it by yourself.Step Ⅶ Homework1. Retell the passage2. Remember important language pointsThe second period Language studyStep Ⅰ Revision1. Check retelling of the passage2. Translate the following sentences.a. 你迟早会成功的.b. 我的车与你的不一样.c. 站在门旁边的那个人是谁?d. 他总是第一个来,最后一个走.e. 既然你已经长大了,你自己决定吧.Suggested answers:a. You will succeed in time.b. My car is different from yours.c. Who is the person standing by the door?d. He is always the first to come and the last to go.e. Now that you have grown up you can decide it yourself.Step Ⅱ Word studyThis part is a consolidation of the words learnt in this unit. Ask the students to do the exercises individually.a. Page 27. First let students finish part 1,2b. Check the answers with the whole class.c. Give students 3minutes to finish part 3.d. Let the students read part 4 for a while and finish it.e. Turn to page 63. First let the students finish 1and 2 and check the answers.Step Ⅲ PreparationShow some sentences on the blackboard.a. A tree has fallen across the road.b. You are a student.c. To find your way can be a problem.d. Smoking is bad for you.e. “How do you do?” is a gr eeting.f. What she said is not yet known.g. That we shall be late is certain.h. It’s certain that we shall be late .T: What part does the underlined part serve as in each sentence? Or find its subject in each sentence.Step Ⅳ Grammar1. Give the students some time to find the sentences in the passage. The collect answers from the class.2. Show typical examples of how to make a subject clause. Guide the Ss to find out what changes we have to make when we make a sentence or combine two sentences using subject clause. Teacher shows the example and Ss write down the sentences.3. Turn to page 64. Read the following passage quickly and finish the eight sentences.4. Have a discussion in pairs. The topic is My dream. One talks about the problems in his study or life, another gives some advice. Remind the students to use the following structuresa. My problem is…b. My trouble is…c. The question is…d. My advice is…e. What I think about it is…f. The fact is…g. My suggestion is…Step ⅤHomework1. Finish part 3(P23)2. Finish part 3(P64)Added material:什么是黑洞？就是在宇宙中有那么一些点，这些点的体积趋向于零而密度变得无穷大，由于具有强大的吸引力，物体只要进入离这个点一定距离的范围内，就会被这个强大的引力吸收掉，连光线也不例外。
人教新课标高中英语必修三Unit4Astronomy全单元详细教案
Unit 4 Astronomy: thescience of the starsContents 目录一、单元教学目标和要求(Teaching aims and demands)二、教材内容分析(Analysis of the teaching materials)三、单元预习任务(Pre-unit task）四、教学安排(Teaching arrangements)五、教学步骤(Teaching procedures)六、背景参考资料(Background knowledge)七、评价与反思(Assessment and reflection)一、教学目标和要求(Teaching aims and demands)根据《英语新课程标准》（实验稿）关于总目标的具体描述，结合高一学生实际和教材内容，我们将教学目标分为语言知识、语言技能、学习策略、情感态度、文化意识五个方面。
1．语言知识（Knowledge）词汇（Vocabulary）：能理解、内化、运用以下生词--atmosphere, violent--violence, solid, explode, oxygen, surface, planet, harmful—harm, development—develop, spread, method, presence, telescope, disappointed, force, gradually, float, mass,短语(Phrases and expressions)：the solar system, in time, carbon dioxide, prevent… from, depend on, cheer up, now that, break out,功能(Functions)：学习掌握一些用于陈述问题及给予意见的结构，如：My problem/ trouble is……? The difficulty / question is…My advice/ suggestion is…What I think about it is…Please pay attention to…Make sure you …Watch out for…语法(Grammar)：掌握和运用主语从句。
2020-2021学年高中英语【云南】同步教案：Unit4(共5课时)(人教新课标必修3)
2022-2021学年高中英语【云南】同步教案：Unit4（共5课时）（人教新课标必修3）Unit 4 Astronomy: the science of the starsPeriod 1 and 2: Warming up and readingI.Warming up: Lead-inGood morning, class! Today, w are going to take Unit 4 Astronomy: the science of the stars. Before we read the text, let’s turn to page 97 and get familiarized with the vocabulary first. Pay attention to the making of the word. Study the prefixes, roots and suffixes in the words.Play a game to learn the names and positions of the planets:Venus is next to Mercury.Earth is the third planet.Mars is between Earth and Jupiter.Neptune is the furthest planet from the sun.Saturn is between Uranus and Jupiter.Mercury is closest to the sun.II. Pre-reading1. Looking and sayingHave you ever wondered how the universe began? Well I'm sure you may have many answers to this question, but I have one that perhaps, you may not have heard of yet. I will be giving you my theory on this subject. Now look at the screen and listen to me telling you something exciting.科学家透露：宇宙可能有两个我们的宇宙和一个"隐蔽的"宇宙共同"镶嵌"在"五维空间"中。
Unit4Astronomythescienceofstars教案人教必修三.doc
[Unit 4 Astronomy: the science of starsPeiiod 2 Rending Compi ehen dingTeaching Aims: Enable the Ss to say something about astronomyHelp the students to form a good habit of readingCultivate the Ss1 awareness of protecting the earth.Teaching Importance: How to improve the Ss'ability to un d erst a nd how life bega n onthe earthTeaching Methods:Task — based methodTeaching Procedure:Stepl. Warming up1.Free talk2.Review the words of Unit 4 by playing chess on the blackboard.Step2 Leading-in1.Talk about some pictures.2.Watch a video and then ask the Ss to put the pictures on the screen into a right order. Step3 ReadingTask 1 SkimmingRead the passage quickly and join the main idea for each paragraph.Para.l a)The arrival of humans and their impact on the earthPara.2 b)The development of plants and animals on the earthPara.3 c)A widely accepted theory about the formation of the universePara.4 d)The importanee of water for lifePara.5 e)The formation of the earthTask 2 ScanningRead the passage carefully and then fill in the blanks with different kinds of living things.Fill in the blanks with different kinds ofliving things・animals plantsStaall plants in wator => shellfish and all sorts of fish/ 4 in sectsg reen plants on land. gamphibians一”一—一―f、/ 、// 7 reptiles6f orests円8dinosaurs'、9 mammals /"Task 3 Careful Reading:Finish the summary according to the text:After the "big bang： the earth was still just a cloud of _____________________ ,it ______ loudly with fire and rock, which were _________ to produce the ___________ , carb on dioxide and other gases. Then ________________ grew ・ They multiplied and filled theoceans and seas with _____ • Many millions of years later the first _________ b egan to appear on land. When the plants grew to forest, _______ appeared for the first time. They produced young gen erally by ______________ . Whe n dino saurs disappeared, _______ became more important.Task 4 Post ReadingDiscuss in groups.1.What problems have been caused by humans to the earth?2.How to protect the earth and make it a better place to live on?Step 4 Homework1.Search the In ter net for the imformati on of the development of life.2.Read the passage carefully and try to find out key points.。
人教新课标高中英语必修三Unit 4 Astronomy_ the science of the starsUnit 4 Astronomy_ the science of t
Unit 4 Astronomy: the science of the starsTeaching goals 教学目标1 Target language目标语言a重点词汇和短语preparation, instruction, unexpected, a set of, pay attention to, as well asb交际用语Practice giving instructionsPlease look at/ listen to…Please check that…You need…Please pay attention to…Don’t forget to…You’d better…Make sure you…Watch out for…You mustn’t…2 Ability goals 能力目标a. Enable the Ss to make a list of things that they need.b. Enable the Ss to talk about giving instructions.c.. Enable the Ss to play different roles in a conversation.3Learning ability goals 学能目标a. Learn how to make a list of things that they needb Help the Ss learn how to talk about giving instructionsc. Enable the Ss learn how to play different roles in a conversation. Teaching important and difficult points教学重点难点a. Teach the Ss how to how to talk about giving instructionsb. Help the Ss to learn how to play different roles in a conversation. Teaching methods教学方法a. Pairs work and group workb. Discussion and cooperative learningTeaching aids教具准备1 A computer2 A projectorTeaching procedures & ways教学过程与方式Step I RevisionAsk some of the Ss to read his / her passage about gravity.One possible passage:Sir Isaac Newton: The Universal Law of GravitationThere is a popular story that Newton was sitting under an appletree, an apple fell on his head, and he suddenly thought of theUniversal Law of Gravitation. As in all such legends, this isalmost certainly not true in its details, but the story containselements of what actually happened.What Really Happened with theApple?Probably the more correct version of the story is that Newton,upon observing an apple fall from a tree, began to think alongthe following lines: The apple is accelerated, since its velocity changes from zero as it is hanging on the tree and moves toward the ground. Thus, by Newton's 2nd Law there must be a force that acts on the apple to cause this acceleration. Let's call this force "gravity", and the associated acceleration the "accleration due to gravity". Then imagine the apple tree is twice as high. Again, we expect the apple to be accelerated toward the ground, so this suggests that this force that we call gravity reaches to the top of the tallest apple tree.Sir Isaac's Most Excellent IdeaNow came Newton's truly brilliant insight: if the force of gravity reaches to the top of the highest tree, might it not reach even further; in particular, might it not reach all the way to the orbit of the Moon! Then, the orbit of the Moon about the Earth could be a consequence of the gravitational force, because the acceleration due to gravity could change the velocity of the Moon in just such a way that it followed an orbit around the earth.This can be illustrated with the thought experiment shown in the following figure. Suppose we fire a cannon horizontally from a high mountain; the projectile will eventually fall to earth, as indicated by the shortest trajectory in the figure, because of the gravitational force directed toward the center of the Earth and the associated acceleration. (Remember that an acceleration is a change in velocity and that velocity is a vector, so it has both a magnitude and a direction. Thus, an acceleration occurs if either or both the magnitude and the direction of the velocity change.)But as we increase the muzzle velocity for our imaginary cannon, the projectile will travel further and further before returning to earth. Finally, Newton reasoned that if the cannon projected the cannon ball with exactly the right velocity, the projectile would travel completely around the Earth, always falling in the gravitational field but never reaching the Earth, which is curving away at the same rate that the projectile falls. That is, the cannon ball would have been put into orbit around the Earth. Newton concluded that the orbit of the Moon was of exactly the same nature: the Moon continuously "fell" in its path around the Earth because of the acceleration due to gravity, thus producing its orbit.By such reasoning, Newton came to the conclusion that any two objects in the Universe exert gravitational attraction on each other, with the force having a universal form:The constant of proportionality G is known as the universal gravitational constant. It is termed a "universal constant" because it is thought to be the same at all places and all times, and thus universally characterizes the intrinsic strength of the gravitational force.Step II PresentationT: Do you remember the conversation between Li Yanping and Professor Wallis?S1: Yes.T: We all know that space walk is difficult and dangerous. What should an astronaut take with him? S2: oxygen can.S3: spacesuit.S4: gravity boots.S5: water system.S6: special food.S7: special ropes.T: Great! Do you know the usage of them? Now discuss them with your partner according to the form on Page31. You can refer to our listening material on Page65.When Ss discuss. Teacher walk around the classroom to give them some help.Step III Speaking (Page31)(After a few minutes.)T: Have you finished? Now speak one or two sentences for each equipment you should take.Sa: I will take water with me in my spacesuit in order to warm or cool me if it’s too cold or too hot. Sb: I will take oxygen can on my back in order to help me breathe oxygen in space.Sc: I’ll wear spacesuit. t can protect me from many dangers. It can carry many necessary things in or on it.Sd: I’ll take space buggy in order to travel on the moon.Se: I’ll take a rope to tie me to the spaceship, or I’ll fly away.Sf: I’ll take special food so that I can eat easily, because the food will float in space.Sg: I’ll wear special sunglasses in order to protect my eyes.Sh:I’ll take space camera in order to take photos.T: Wonderful! Anything else?Si: I’ll wear space boots in order to walk there.T: Very good. You’ve done an excellent job! Do you know how to fill in the form now?Ss: Yes.T: Now look at the screen and check your answer.Sample answer:Step IV Talking (Page62)The task asks the students to work in pairs and give a friend a number of “does” and “don’ts” for going into space. They need to make suggestions using the phrases that they have been given to help them. When they have worked out the advice they can write the suggestions down and read them out to the class.Show the useful expressionsPlease look at/ listen to…Please check that…You need…Please pay attention to…Don’t forget to…You’d better…Make sure you…Watch out for…You mustn’t…T: Now discuss it in pairs. Then I will ask some pairs to read out their instructions.Sample dialogue:S1: I’m going to visit a comet. I’m leaving tomorrow.S2: How exciting! Please check that you have got the correct sort of spacesuit. You need the kind that will keep you warm if it’s too cold.S1: Of course!S2: Make sure you know all the safety rules. It’s not safe to stand on a comet or get too close.There is always a strong wind in space.S1: I won’t leave the spaceship except that I take photos.S2: Photos? Just think of the dust in the air. It will make taking photos very difficult.S1: Well, I’ll take some anyway.S2: Watch out for the space wind! It can be very dangerous.S1: Yes, I know that.S2: Don’t forget to watch the time as you leave the earth. Please pay attention to everything your space guide says. Don’t go off on your own. Look at your temperature on your spacesuit all the time. If it’s too low you need to warm it up and if it’s too high you need to cool it down. Anyway, have a good trip!S1: Thank you. I will.Step V Speaking Task (Page67)The purpose of this task is to use the information the students have gained from the listening text and reading passage in a new situation. They are going to interview the astronomer in our story, Li Yanping, for a newspaper. So in pairs the need to work out some questions to ask him. Each of the pairs needs to think of three different questions. And try to find the answers.Questions and answers:1.What was the most unexpected thing you found out about black holes?The black hole threw out material as well as ate objects.2.How did you know you had got close to a black hole?You can see things disappear into what appears to be an empty space. That’s a black hole.3.What was the most frightening thing that happened to you on this journey?When the gravity of the black hole was pulling us to it’s mouth, and then the spaceship moved round the hole and began to go faster and faster into it; I was terrified because I thought we would be eaten by the hole.4.Why did your watch move slower when your spaceship moved around the hole?I’m not clear yet.5.Have you found something new about black holes?Yes. I thought black holes only eat some objects, but in fact they also spit objects out.Step VI Homework:Prepare for writing a passage about your idea or hopes for traveling in space.。
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Writing [技法指导] 解决问题类说明文，就是针对某一问题提出具体的解决方法并进行适当论述，给读者提供知识，使之掌握解决问题的方法。此类作文的篇章结构如下： 第一部分：提出问题或阐述某件事情的重要性； 第二部分：列举说明处理某事的方式或解决某个问题的途径； 第三部分：针对提出的解决方法进行简要评价，也可提出个人建议或选择，并阐述理由。 黄金表达 常用的开头语 1．One of the biggest problems facing the world today is global warming. 世界所面临的最大问题之一是全球变暖。 2．As we all know, the global water shortage is becoming increasingly severe mainly due to global warming. 众所周知，由于全球变暖，全球水资源短缺问题正变得日益严重。 3．There is no doubt that the earth is becoming warmer and that it is human activity that has caused this global warming. 毫无疑问，地球正变得更加暖和，全球变暖正是人类活动所致。 4．In order to avoid traffic jams, I strongly suggest some effective measures be taken. 为避免交通拥堵，我强烈建议采取一些有效的措施。 主体部分常用表达 1．In the first place, I would also recommend a balanced diet. 首先，我也会推荐均衡饮食。 2．We should work together to fight against pollution and make our environment safer and more comfortable to live in. 我们应该一起努力同污染作斗争使我们的环境更安全更适宜居住。 3．There is no denying the fact that it is a serious problem; the government should take strong measures to deal with it. 无可否认，这是一个严重的问题，政府应该采取有力措施来解决它。 4．The most important thing is that people should be made aware of the importance of environmental protection. 最重要的是应让人们意识到保护环境的重要性。 常用的结束语 1．If we are more environmentally friendly, the earth's temperature may not rise too much. 如果我们多善待环境，地球温度就可能不会上升那么快了。 2．As far as I'm concerned, it's everyone's duty to protect the environment. 依我看来，保护环境是我们每个人的责任。 3．It's high time that we did something about it. 是我们该做些事情的时候了。
[写作规范] [题目要求] 假设你是李华，对探月感兴趣，现在写一篇短文，设想如何在假期到月球旅行，重点问题是如何克服吃饭和喝水的问题。 要求：词数100左右。
[三步作文法] 第一步：搜索单元词汇 1．重力 gravity 2．飘浮 float 3．阻止……做…… prevent_..._from_... 4．解决 solve 5．尝试 try/have_a_try 6．迟早；终于 in_time 第二步：巧用单元语法和句型 (一)根据汉语提示完成句子 1．如果我参观月球，会有一个问题。 If I visited the moon, there_would_be_a_problem. 2．我可能要面对一个问题。 I might be_faced with a problem. 3．在地球上我们吃、喝都很容易。 On the earth, it_is_easy for us to eat and drink. 4．在月球上，重力很弱。 On the moon, the_gravity_is_weak． 5．食物会到处飘浮。 The food will float_around/about． 6．用这种方式，这个问题可以被解决。 The problem would be_solved in this way. (二)根据所给要求，用以上句子完成句式升级 7．用定语从句连接句1、2 If_I_visited_the_moon,_there_would_be_a_problem_I_might_be_faced_with. 8．用主语从句改写句3 It_is_easy_that_we_eat_and_drink_on_the_earth. 9．用so ... that ...连接句4、5 On_the_moon,_the_gravity_is_so_weak_that_the_food_will_float_around/about. 10．用“only＋介词短语”放于句首的句型改写句6 Only_in_this_way_would_the_problem_be_solved. 第三步：连接过渡成篇 If I visited the moon, there would be a problem I might be faced with: how to eat and drink. On the earth, it is easy for us to eat and drink. But on the moon, the gravity is so weak that the food will float around. I would have to take all my food with me if I went to the moon. So it could be put in a tube and then I would be able to suck it more easily. Perhaps I would use a straw to do it. It can prevent the food from floating away. Only in this way would the problem be solved. I will have a try in time.
品味人生 1、不管鸟的翅膀多么完美，如果不凭借空气，鸟就永远飞不到高空。想象力是翅膀，客观实际是空气，只有两方面紧密结合，才能取得显着成绩。 2、想停下来深情地沉湎一番，怎奈行驶的船却没有铁锚;想回过头去重温旧梦，怎奈身后早已没有了归途。因为时间的钟摆一刻也不曾停顿过，所以生命便赋予我们将在汹涌的大潮之中不停地颠簸。 3、真正痛苦的人，却在笑脸的背后，流着别人无法知道的眼泪，生活中我们笑得比谁都开心，可是当所有的人潮散去的时候，我们比谁都落寂。 4、温暖是飘飘洒洒的春雨;温暖是写在脸上的笑影;温暖是义无反顾的响应;温暖是一丝不苟的配合。 5、幸福，是一种人生的感悟，一种个人的体验。也许，幸福是你风尘仆仆走进家门时亲切的笑脸;也许，幸福是你卧病床上百无聊赖时温馨的问候;也许，幸福是你屡遭挫折心灰意冷时劝慰的话语;也许，幸福是你历经艰辛获得成功时赞赏的掌声。关键的是，你要有一副热爱生活的心肠，要有一个积极奋进的目标，要有一种矢志不渝的追求。这样，你才能感受到幸福。 6、母爱是迷惘时苦口婆心的规劝;母爱是远行时一声殷切的叮咛;母爱是孤苦无助时慈祥的微笑。 7、淡淡素笺，浓浓墨韵，典雅的文字，浸染尘世情怀;悠悠岁月，袅袅茶香，别致的杯盏，盛满诗样芳华;云淡风轻，捧茗品文，灵动的音符，吟唱温馨暖语;春花秋月，红尘阡陌，放飞的思绪，漫过四季如歌。读一段美文，品一盏香茗，听一曲琴音，拾一抹心情。 8、尘缘飞花，人去楼空，梦里花落为谁痛?顾眸流盼，几许痴缠。把自己揉入了轮回里，忆起，在曾相逢的梦里;别离，在泪眼迷朦的花落间;心碎，在指尖的苍白中;淡落，在亘古的残梦中。在夜莺凄凉的叹息里，让片片细腻的柔情，哽咽失语在暗夜的诗句里。 9、用不朽的“人”字支撑起来的美好风景，既有“虽体解吾犹未变兮”的执着吟哦，也有“我辈岂是蓬蒿人”的跌宕胸怀;既有“我以我血荐轩辕”的崇高追求，也有“敢教日月换新天”的豪放气魄。 33 我是一只蜜蜂，在祖国的花园里，飞来飞去，不知疲倦地为祖国酿制甘甜的蜂蜜;我是一只紫燕，在祖国的蓝天上，穿越千家万户，向祖国向人民报告春的信息;我是一滴雨点，在祖国的原野上，从天而降，滋润干渴的禾苗;我是一株青松，在祖国的边疆，傲然屹立，显示出庄严的身姿。 10、母爱是一滴甘露，亲吻干涸的泥土，它用细雨的温情，用钻石的坚毅，期待着闪着碎光的泥土的肥沃;母爱不是人生中的一个凝固点，而是一条流动的河，这条河造就了我们生命中美丽的情感之景。 11、青春是盛开的鲜花，用它艳丽的花瓣铺就人生的道路;青春是美妙的乐章，用它跳跃的音符谱写人生的旋律;青春是翱翔的雄鹰，用它矫健的翅膀搏击广阔的天宇;青春是奔腾的河流，用它倒海的气势冲垮陈旧的桎梏。 12、失败，是把有价值的东西毁灭给人看;成功，是把有价值的东西包装给人看。成功的秘诀是不怕失败和不忘失败。成功者都是从失败的炼狱中走出来的。成功与失败循环往复，构成精彩的人生。成功与失败的裁决，不是在起点，而是在终点。 13、母爱是一缕阳光，让你的心灵即便在寒冷的冬天也能感受到温暖如春;母爱是一泓清泉，让你的情感即使蒙上岁月的风尘仍然清澈澄净。 14、不要吝惜自己的爱，敞开自己的胸怀，多多给予，你会发现，你也已经沐浴在了爱河里。 15、奉献是爱心，勇于付出，你一定会收到意外之外的馈赠。 16、人生就像一条河，经历丰富，才能远源流长。伟大的一生，像黄河一样跌宕起伏，像长江一样神奇壮美。 人生就像一座山，经历奇特才能蔚为大观。伟大的一生，像黄山一样奇峰迭起，像泰山一样大气磅礴。 经历就是人生的硎石，生命的锋芒在磨砺中闪光;经历就是人生的矿石，生命的活力在提炼中释放。 经历就是体验，经历就是积淀。没有体验就没有生