高中英语人教版必修三教学案：Unit 4 Section 1 含答案
Ⅰ.Match the word with its meaning.1．astronomy A．学说；理论2．system B．猛烈的；激烈的；强暴的3．theory C．大气层；气氛4．violent D．基本的；基础的5．atmosphere E．乘；增加6．fundamental F．谜；(使)迷惑7．harmful G．存在；生存8．multiply H．有害的9．exist I．天文学10．puzzle J．系统；体系；制度答案：1～5IJABC6～10DHEGFⅡ.Write down the meaning of phrases in each sentence.1．The truth will come to light in time.迟早2．As we know, laying eggs is the ant queen's full-time job.下蛋3．Once she has made up her mind, nobody can prevent her from carrying out the plan.阻止4．When it was in my turn, I was too excited to speak.轮到5．Jane has just given birth to twins, so her mother must be in the hospital looking after her now.分娩6．My relationship with the actors is fundamental to my work as a director.对……(来说)是基本的Ⅰ.No one knows exactly how the earth and life began, but ancient legends (传说) may tell us something about it. Look at the following pictures and fill in the blanks.①Picture A may tell us Pangu separates the sky from the earth.②Picture B may tell us the Goddess Nvwa mended the heaven and created human beings from the clay (黏土)．③Picture C may tell us according to the Bible God created the world in seven days.Ⅱ.Discussion: Are you interested in astronomy? Why?Yes,_I_am._Because_I_want_to_know_more_about_the_stars,_the_moon,_the_sun_and_the _universe._If_we_explored_and_studied_them_very_well,_we_can_serve_for_our_country_and_ human_beings_very_well.Ⅰ.Fast-reading1．Match the main idea with the proper paragraph.Para. 1A．The formation of the earth.Para. 2 B．A widely accepted theory about the formation of the universe.Para. 3 C．The development of plants and animals on the earth.Para. 4 D．The arrival of humans and their impact on the earth.Para. 5 E．The importance of water for life.答案：Paras.1～5BAECD2．What does the passage mainly tell us?A．The importance of water.B．How the life began on the earth.C．How human beings appeared.D．How plants appeared.答案：BⅡ.Careful-readingRead the text carefully and choose the best answer.1．Why was life able to develop on the earth but not on other planets?A．The earth had a solid shape.B．The earth didn't have harmful gases in its atmosphere.C．The water stayed on the earth but not on other planets.D．The earth was not too hot and not too cold.2．Why are plants important on the earth?A．They produce oxygen for animals.B．They provide the shade for animals.C．They provide a beautiful scene.D．They protect the soil from being destroyed.3．What is the correct order according to the text?①The clever animals with hands and feet appeared and spread all over the earth.②The “Big Bang”．③Small plants began to appear on the surface of the water.④65 million years ago, the age of the dinosaurs ended.A．②①③④B．④③①②C．②④③①D．②③④①4．Early humans appeared after dinosaurs died out ________ million years later.A．67.6 B．62.4C．65 D．140答案：1～4CADBⅢ.Study-readingAnalyze the following difficult sentences in the text.1．No one knows exactly how the earth began, as it happened so long ago.[尝试翻译]没有人确切地知道地球的起源，因为那是很久以前的事了。
2．What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe.[尝试翻译]随后它会变成什么没人能知道，直到38－45亿年前，这团尘埃才慢慢地形成了一个固态的球体。
3．What is even more important is that as the earth cooled down, water began to appear on its surface.[句式分析]这是一个复杂的句子。
what引导主语从句；that引导表语从句；as在表语从句中引导状语从句。
[尝试翻译]更重要的是，随着地球的不断冷却，地球表面出现了水。
4．So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.[尝试翻译]所以在未来的千百万年中，生命能否在地球上延续下去将取决于这个问题能否得到解决。
[对应学生课下能力提升(十三)]阅读理解AOf all the planets, none has captured (吸引) the world's imagination like Mars.Its reddish (淡红的) color and changes in brightness over time make the planet an unforgettable sight.In Cosmos, the television science series from the 1980s, scientist Carl Sagan talked about some traditional ideas about Mars.Some of these ideas are from the English science fiction writer H．G.Wells' The War of the Worlds.Others are from the mistaken science of Percival Lowell, the American astronomer who believed intelligent beings lived on Mars.Wells described Martians as threatening.Lowell imagined them as the hopeful engineers of great works.Carl Sagan said that both ideas influenced the public deeply.Today, Mars continues to excite humans —not as the object of science fiction but of scientific study.Space scientists have collected a wealth of information from spacecrafts that have orbited (沿轨道运行), landed on and dug into the Martian surface.The Smithsonian's “Mars Day”offered a chance for people of all ages to touch Mars, or at least a piece of it.Allison and Alycia from Silver Spring, Maryland, brought their children, Grace, Sam, Ryan and Emma.They heard about Mars and its geology from experts.They could see a test version of the Viking landers that reached Mars in July of 1976.They also saw meteorites (陨星) known to have come from the red, or reddish planet.Eightyearold Sam learned that the ancient description of Mars as red is not exactly right.He said，“It's actually orangish more than red and it's also kind of brown.”Emma is six.She learned about the volcanic activity that has shaped the surface of Mars.She said，“The closest thing to Mars — the stuff — is from volcanoes mostly.”“Mars Day”offered Allison and Alycia's children a chance to learn more about a world that they are very likely to set foot on within their lifetimes.语篇解读：在“火星日”，人们可以对火星有更好的了解和认识。
人教新课标高一英语必修3第四单元Unit 4 Astronomy the science of the stars (Module 3)学案含答案
Module 3 Unit 4 Astronomy: the science of the starsPeriod 1 Reading: How Life Began on The Earth班级__________ 姓名____________ 学号_____________Learning Objectives:1.Learn the useful new words and expressions in the reading material.2.Improve the reading skills while reading the passage about the astronomy.Learning Key Points:1. Grasp the important words and expressions in the reading material.2. Learn something about how life began on the earth.Learning Difficult Points:1. Grasp the important words and expressions.2. Improve the reading ability.Learning Procedures:I.【Pre-class homework】Assessment:A. Match the main idea of each paragraph.Para 1: ( ) A. The formation of the earth.Para 2: ( ) B. A widely accepted theory about the information of the universe.Para 3; ( ) C. The arrival of humans and their impact on the earth.Para 4: ( ) D. The importance of water for life.Para 5: ( ) E. The development of plants and animals on the earth.B. Ask and answer.1. What was there on the earth before life could begin?___________________________________________________________________________ 2.Why did animals first appear in the seas?___________________________________________________________________________ ___________________________________________________________________________ II. While-class （课堂教学流程）Step 1 Lead-inStep 2 Discussion （小组讨论交流课堂前置性作业）Ss discuss their pre-class homework in groups.Step3 Consolidation（巩固应用）A. Further reading and finish the following comprehension questions.1.( ) What forms the earth’s atmosphere?A. Carbon dioxide, oxygen .B. Carbon dioxide, oxygen, poisonous gas.C. Water vapor, carbon dioxide, oxygen, nitrogen.1D. Water vapor, carbon dioxide, oxygen, nitrogen and other gases.2. ( ) Why was the earth different from other planets?A. It produced a lot of heat.B. The water remained.C. Water disappeared.D. It was the oldest planet.3. ( ) What kind of factor improved the progress of life?A. Water forms on the earth’s surface.B. Green plants began to appear on land.C. The air is full of carbon dioxide.D. Animals began to appear such as insects, amphibians, est.3.( ) What is the main idea of this passage?A. It tells us how life begins to appear on the earth.B. It tells us why green plants grow before animals.C .It tells us water plays an important role in the development of life.D. It tells us carbon dioxide is the reason why living beings will die in the future,4.( ) The author infers us that if we want the life to continue on the earth, what shouldwe do?A. We should produce more carbon dioxide to cause global warming.B. We should solve the problem of global warming as soon as possible.C. We should bear less people and think about a new way to grow more crops.D. We should be worthy of water.B. Cloze test.At the very beginning, the earth was just a cloud of 1. ___________ (energy) dust. Then the dust combined 2. __________ a ball moving around the sun. After that, it exploded 3.______(loud) with fire and rock, 4. ___________ (produce) water vapor,carbon dioxide and other gases, 5. _____________ made 6. ____________ possible for life to begin to develop. Some small plants 7. ___________ (grow) in the water appeared on the earth’s surface, 8. _____________ (follow) by land animals, including insects, amphibians, reptiles and the dinosaurs. But they disappeared 9. ________ of a sudden and some small clever animals with hands and feet appeared and spread all over the earth and took the place of dinosaurs. They became 10. _______ most important animals on the planet —that is, human beings.Step 4 Presenting （成果展示与教师点拨）Ss present their group job.1．Ss write down their answers on the blackboard and give the explanation in class. 2．Teacher and Ss’ comment.Step 5 Summary（学生小结）Ss talk about what they have learned in the lesson.Keys:【Pre-class homework】A. Fast reading1. BADECB.1. Water vapor, carbon dioxide, oxygen, nitrogen and other gases.2. Because water allowed the earth to dissolve harmful gases into the oceans and seas. While-classA. 1-5 DBBABB. Cloze test.1.energetic2. into3.loudly4. producing5. which6. it7. growing8. followed9. all 10. thePeriod 2 Language points in Reading 1 Class：Name：Group：No：Learning Objectives:1. Learn and grasp the important useful new words and expressions.2. Learn the important useful sentences and patterns.3. Make sentences after the useful expressions.Learning Key Points:Ss grasp the usages of such important new words and expressions.Learning Difficult Points:Ss understand some difficult and long sentences.Learning Procedures:I.【Pre-class homework】Assessment: Translate the Chinese into English.A. Phrases1. 太阳系____________2．大爆炸____________3．及时，终于____________4．形成，安顿下来____________ 5．对……（来说）是基本的___________ 6．对……有害____________ 7．连锁反应____________8．下蛋____________9．产生，分娩____________ 10．轮到某人，接着____________ 11．二氧化碳____________ 12．阻止，制止____________B. Sentences3Assessment:1. 昨天晚会的气氛非常欢快，每一个人都度过了美好的时光。
人教版高中英语选择性必修第三册UNIT 4 Part I Reading and 同步练习含答案
课时把关练Part I Reading and Thinking基础知识练Ⅰ. 单词拼写1. Holidays are expensive and，for those on low w（工资），they are often unobtainable.2.Losing the basketball match last week was a b（激烈而不愉快的）disappointment for the team.3. I said goodbye to my friend as he got a（上，登上）the train at Beijing Railway Station.4. They enjoyed an income and lifestyle that many people would e（羡慕）.5. He saw the corner of a magazine sticking out from under the b（毛毯）.6. We must find ways to assure our children a d（相当不错的）start in life.7. The reforms are motivated by a g（真正的）concern for the disabled.8. My heart s（下沉）because I thought he was going to leave me behind.Ⅱ. 用所给短语的适当形式填空1. The little girl has several invitations to star at shows in order to concentrate on her studies.2. Nowadays many young people from the countryside finding good jobs in big cities.3. During Spring Festival，people like to firecrackers and put up spring couplets on the door.4. At dusk，I walked as far as the lake and then I made up my mind to .5. Mr. Smith was thirty minutes late for the meeting because he had been traffic jam.6. Faced with challenges，you’d better a good state of mind.7. I don’t know why you are so concerned—it isn’t your problem .8. Young people，and vitality，are like the sun at eight or nine in the morning.Ⅲ. 单句语法填空1. In my opinion，there is no evidence indicating that he is a （qualify）doctor.2. Before I entered the competition，I had mixed program of strength and （endure）training.3. I was always an （enthusiasm）reader，sometimes reading up to three books a day as a child.4. Never will I forget my first （assign）at the office of a popular English newspaper.5. If you don’t have an aim，you will drift like an （abandon）ship at sea.6. He asked me to take fewer （belong）as there was little room left in our car.7. With faith and （persevere），Goodall finally overcame all the difficulties.8. They made a （resolve）to go climbing Mount Tai on Sunday.Ⅳ. 一句多译1. 我下火车时碰巧在下雨，因此只好乘出租车。
人教版高中英语选择性必修第三册课后习题 Unit 4 Section Ⅰ
SectionⅠReadingandThinking课后训练一起提高一、用适当的介词或副词填空1.I have been dreaming becoming a doctor since I was five.2.No matter how difficult the matter is,I am ready it.3. the age of 19,I was fit and full of vigour.4.When the ship sank,our hearts sank it.5.But our surprise,he allowed Jack to keep his notes.6.Suddenly,the situation went bad to worse.二、用所给单词的适当形式填空1.His (endure) was so surprising that we all admired him.2.I don’t believe the applicant can be (qualify) for the job.3.Standing at the door,the old couple welcomed us (enthusiastic).4.I managed to complete the (assign) he had sent me.5.With the ship (sink),all the passengers burst into tears.6.My brother was (abandon) to watching TV when I came in.7.His (envy) eyes made me uncomfortable.三、句型转换1.He has been refused again.→He has been again.2.All my team will set out for Beijing.→All my team will for Beijing.3.Because of envy,he made some bad remarks on her.→,he made some bad remarks on her.4.I thought he would come on time but he didn’t appear.→I thought he would come on time but hedidn’t .5.To tell the truth,I envy you for your honesty.→To tell the truth,Ienvy .四、阅读理解ALandon Cunningham’s 9th birthday celebration and first trip to a Major League baseball game changed from a near disaster to relief in a split second(刹那),all thanks to his hero dad.Landon was looking at his phone while sending his mum a picture from Saturday’s game when Pittsburgh outfielder(外野手) Danny Ortiz lost control of his bat.That sent the bat flying fast into the seats behind the first base,directly at Landon’s face.At the la st moment,the boy’s father,Shaun Cunningham,put out his arm to block the bat from hitting his son.“I didn’t have a lot of time to think,”Shaun said.“Once I realised that it was headed for my son,I just did anything that I could to deflect it.”“I looked up because my dad said something,but I didn’t look up in time and he put out his arm to block it,” Landon said.The family was able to breathe a sigh of relief thanks to Shaun,who is a firefighter.Shaun’s wife,Ashley,got emotional when she first saw a photo of her son nearly getting badly hit.“She got a little disgusted looking at it,”Shaun said about his wife.And soon,Landon will have something else to commemorate(纪念) his memorable big league birthday.While the bat incident was a little scary for Landon,Shaun made sure it was a day to remember.“My first baseball game was amazing,” Landon said.1.What happened on Saturday?A.Danny Ortiz fell and his bat dropped.B.A game was played for Landon’s birthday.ndon played his first baseball game.D.A baseball bat flew into the audience seats.,Landon正在看手机,同时给他的妈妈发送比赛照片,这时Pittsburgh的外野手DannyOrtiz手中的球棒脱手。
人教版高中英语选择性必修第三册课后习题 Unit 4 Section Ⅰ
SectionⅠReadingandThinking课后·训练提升一、单词拼写1.This plane carried over 300 passengers and c .2.We were moved by his g attempt to improve those conditions.3.He gave the order to a the ship for it was going down.4.The mother covered the sleeping baby with a thick b to keep him warm.5.She joined the n and became a soldier in the ship.6.The reforms owe a great deal to the r of many great men.7.The sun was s in the west and it was time to go back home.8.Facing hardships,herp counts for much.二、单句语法填空1.I will try to finish the work (assign) to me ahead of time.2.Finally they arrived at the (abandon) house,tired and hungry.3.They made a (resolve) to lose all the weight gained during the period.4.The training will get him (qualify) for the hard job.5.His proposal was turned by his boss,which made him disappointed.6.He took the umbrella (belong) to Mary by mistake just now.7.The exciting story will keep the tired soldiers ina hard situation.8.It was his (persevere) that helped him succeed at last.9.The old man (work) in the field for more than two hours.10.I really admired his (endure) when he looked after little children.三、阅读理解Antarctica doesn’t seem very inviting,but abou t 37,000 visitors are expected to go on a trip to the frozen continent during this tourist season.If you decide to go there,you’ll need to think about timing.Ice,wind and low temperatures make a trip to Antarctica an impossibility outside of November thro ugh March.You’ll also have to consider the almost prohibitive cost of your ship ticket—fromabout US$3,500 to US$25,000.This doesn’t cover the airfare to your port of departure.Deciding what kind of boat on which to travel will make all the difference as accommodations vary greatly from one to the neight carry from 500 to 30,000 passengers,are good for vacationers and learners,but they never dock at a port.Smallerships,such as yachts(快艇) and dive boats,allow you on the continent,and their staff plan various physical activities for visitors.Those who actually get their feet on the ground will be privileged to have a very unique eany educational opportunities.Tours of active scientific research facilities manned by biologists are often available.Visitors are also able to see various penguins and seals,some of which are brave enough to get up close.Finally,a few adventurous ones will enjoy mountaineering and diving during their time on the icy land.Another consideration that must be made when visiting Antarct ica is one’s environmentalfootprint.Everytourist,guide,researcher and ship makes an impact on this faraway part of our Earth.Precautions(预防措施) such as time limits on land,keeping a 5-metre distance from animals and rules against taking or leaving anything on the continent arestrictly kept.Some wonder if it’s better for people just to stay away from Antarctica if they are so likely to affect the land negatively.But most will say that seeing Antarctica helps make the world more aware of the part this beautiful location plays in the global environment.1.Which month is appropriate for a tour of Antarctica?A.February.B.June.C.July.D.October.“Ifyoudecidetogothere,you’llneedtothinkabouttiming.Ice,windan dlowtemperaturesmakeatriptoAntarcticaanimpossibilityoutsideofNo vemberthroughMarch.”可知,十一月到三月适合去南极旅行。
2019-2020年人教版高中英语必修三教学案：Unit 4 Section 1(含答案)
If you watch the sky about an hour after the sun goes down, youmay see some “moving stars”. But they're not real stars. Theyare man-made satellites. And the biggest of all is the InternationalSpace Station (ISS国际空间站)．From now until July is the best season to watch the ISS flying overthe earth, and people can see it just with their eyes. The ISS is thebiggest man-made satellite because scientists want to live on it. Theythink that the best way to learn more about space is to live there.When the space station is finished, it will be like a city in space.People will stay and study there with many of the things they haveat home. Laboratories, living rooms and power stations are being built.The ISS is the most ambitious and expensive space programever. Billions of dollars are being spent on it every year. Scientistshope that the ISS will be a stepping-stone for future space exploration.“The ISS will help us better understand the human body, explore spaceand study the earth. It can help us make life on the earth better，”said Kathryn Clark, an ISS scientist.China is not an ISS country, but it has helped with some of the experiments. China sent some rice up to the ISS to find out whatspace would do to it.The ISS is not finished yet. More than 100 parts need to be put on.Scientists hope it will be finished as soon as possible. After it'sfinished, more than 90% of the world's population will be able to seethe Space Station. So keep looking up, and maybe you'll see it get bigger.2019-2020年人教版高中英语必修三教学案：Unit 4 Section 1(含答案)[原文呈现][读文清障]HOW LIFE BEGAN ON THE EARTHNo one knows exactly how the earth began, as it happened so long ago①. However, according to②a widely accepted③theory④，the universe began with⑤ a “Big Bang⑥”that threw matter in all directions⑦. After that, atoms⑧began to form and combine to create stars and other bodies.For several billion⑨years after the “Big Bang”，the earth was still just a cloud of dust⑩. What it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe⑪. The earth became so violent⑫that it was not clear whether the shape would last or not⑬. It exploded loudly with fire and rock. They were in time to⑭produce carbondioxide⑮，nitrogen ⑯，water vapour⑰and other gases, which were to make the earth's atmosphere⑱. What is even more important is that as the earth cooled down⑲，water began to appear on its surface. ①as it happened so long ago是as引导的原因状语从句。
高中英语必修三：Unit+4 Astronomy4-1教学案+Word版含答案
Unit 4Astronomy: the science of the stars天文学(Astronomy)是研究宇宙空间天体、宇宙的结构和发展的学科。
内容包括天体的构造、性质和运行规律等。
天文学是一门古老的科学，自有人类文明史以来，天文学就有重要的地位。
主要通过观测天体发射到地球的辐射，发现并测量它们的位置、探索它们的运动规律、研究它们的物理性质、化学组成、内部结构、能量来源及其演化规律。
在天文学悠久的历史中，随着研究方法的改进及发展，先后创立了天体测量学、天体力学和天体物理学。
天文学的研究对于我们的生活有很大的实际意义，对于人类的自然观有很大的影响。
古代的天文学家通过观测太阳、月球和其他一些天体及天象，确定了时间、方向和历法。
这也是天体测量学的开端。
如果从人类观测天体，记录天象算起，天文学的历史至少已经有五六千年了。
天文学在人类早期的文明史中，占有非常重要的地位。
埃及的金字塔、欧洲的巨石阵都是很著名的史前天文遗址。
美国著名的女天文学家南西·格蕾丝·罗曼从小痴迷于太空学，被称为“哈勃太空望远镜之母”。
A Great Woman ScientistBack in the 1950s few women in the United States worked outside of the home, and even fewer earned doctorates(博士学位) or went on to have professional careers. However, as the first chief of astronomy at the US space agency, Nancy Grace Roman is a notable exception(例外). She says, “Certainly by the time I was in seventh grade, I knew I had to have a long education if I wanted to become an astronomer.” Pursuing(追求) her interest in astronomy was not easy. But Roman was determined to become an astronomer and learn everything she could about stars. She went to college, studied science and earned her doctorate in astronomy from the University of Chicago in 1949. She has been working very hard and NASA's current chiefastronomer calls her “the mother of the Hubble Space Telescope.” After retiring from NASA in 1979, Roman spends much of her time consulting, teaching and lecturing across the country. Roman hopes she's inspired young women to set aside their inhibitions and reach for the stars, just as she did.根据上文判断正(T)、误(F)1．Many women in the USA worked in the companies in the 1950s.()2．It is not difficult for Roman to achieve her goal.()3．When Roman was very young, she was interested in astronomy.()4．Roman had been teaching astronomy in the University of Chicago until 1979.()5．What Roman did inspires young women to make their dreamscome true.()[答案] 1.F 2.F 3.T 4.F 5.TPart ⅠWarming up, Pre－reading, Reading & ComprehendingⅠ.重点单词1．____________ n．学说；理论2．____________ n．系统；体系；制度3．____________ n．天文学4．____________ n．原子5．____________ v i. & v t.乘；增加6．____________ n．大气层；气氛7．____________ adj.基本的；基础的8．____________ n．球体；地球仪；地球9．____________ n．氧[答案] 1.theory 2.system 3.astronomy 4.atom 5.multiply 6.atmosphere7.fundamental8.globe9.oxygenⅡ.词汇拓展1．____________ v t.使迷惑→____________ adj.迷惑的→____________ adj.令人迷惑的2．____________ adj.猛烈的；激烈的；强暴的→____________ n．暴力→____________ ad v.暴力地；猛烈地3．____________ adj.有害的→____________ n．&v.伤害→____________ adj.无害的4．____________ v i.存在；生存→____________ n．存在；生存5．____________ prep.与……不同；不像→____________ v t.喜欢prep.像；如同→____________ adj.可能的6．____________ n．宗教；宗教信仰→____________ adj.宗教的；宗教信仰的[答案] 1.puzzle; puzzled; puzzling 2.violent；violence; violently 3.harmful; harm; harmless4．exist; existence 5.unlike; like; likely 6.religion; religiousⅢ.重点短语1．根据________________2．及时；终于________________3．冷却下来；变凉________________4．下蛋________________5．产生；分娩________________6．in one's turn ________________7．prevent... from... ________________8．as well as ________________9．in all directions ________________10．depend on ________________[答案] 1.according to 2.in time 3.cool down y eggs 5.give birth to 6.轮到某人；接着7.阻止；制止8．也；还9.朝四面八方10.取决于；依靠Ⅳ.重点句式1．so... that...“如此……以至于……”The earth became ________________ it was not clear whether the shape would last or not.地球(开始)变得如此激烈动荡，以至于不知道这个固体形状是否会继续存在下去。
高中英语人教版必修三教学案：Unit-4-Section-3-含答案
高中英语人教版必修三教学案：含答案Unit-4-Section-3-[语法初识]]语法剖析[在主从复合句中充当主语的从句即为主语从句。
What made her happy was that she won thegame in such an important match. 令她高兴的是在这么重要的比赛中她获胜了。
It is decided that the meeting has been putoff till next Monday.已经定下来将会议推迟到下周一了。
1.连接词that和whether/if(1)that在从句中不充当任何句子成分，本身无任何意义，只起连接作用，但不可省略。
That we are invited to the concert thisevening is good news to us.我们被邀请去参加今晚的音乐会，这对我们来说是个好消息。
(2)whether/if在从句中不充当任何句子成分，起连接作用，意为“是否”，不可省略。
Whether the plan will be carried out is stillunknown.plan if/whether the It is still unknown ＝will be carried out. 这个计划是否会实施还不知道。
引导的主语从句既可放在]点津whether[引导的主语从句只能放但if句首也可放在句尾，作形式主语。
在句尾，前面需用it即时演练1 完成句子That_she_could_come_to_help_us ①made us very happy.她能来帮助我们使我们很高兴。
②Whether_he_can_finish_his_task_ on_time is ofgreat importance.他能否按时完成任务非常重要。
2．连接代词(who, whose, whom, what, which, whichever, whoever, whomever, whatever等)。
高一英语人教版必修3教案：Unit4Reading+Word版含解析
教学设计ReadingTeaching goals：Knowledge aims：1．Get students to learn the useful words and expressions in this part：astronomy，system，religion，theory，atom，billion，globe，violent，carbon，atmosphere，unlike，fundamental，harmful，acid，chain，multiply，oxygen，exist，thus，dioxide，puzzle，solar system，in time，lay eggs，give birth to，in one's turn，carbon dioxide，prevent…from 2．Let students learn about the development of the earth and life.Skill aims：1．Improve students' reading comprehension ability.2．Enable students to know about how the earth came into being and the development of life.Moral culture aims：1．Train students' interest in science and stimulate their love for astronomy.2．Have a deep understanding of the importance of protecting the environment.Teaching important and difficult points：1．Discuss the development of life.2．What will our future be like if the earth becomes too hot to live？And what can we do to prevent such serious situation from happening?Teaching methods & strategies：1．Task-based method & skimming and scanning.2．Asking-and-answering activity to check students' understanding of the text.3．Observation strategy & co-operation strategy for discussion.4．Strategies of finding information by reading.5．Individual，pair or group work to finish each task.Teaching aids：A recorder MultimediaTeaching procedures：tep 1 Lead-in（individual work）T：As we all know，the earth has been existing for billions of years.Did_human_beings_live_on_the_earth_when_the_earth_came_into_being?If not，where do human beings come from？Or who were our ancestors?S1：Monkeys!S2：Beijing Ren who lived many years ago.S3：Apes（类人猿）．S4：Gorillas（大猩猩）．S5：Chimpanzees（黑猩猩）．T：Very good.They belong to primate（灵长目动物）．Another question：Do you know what plays the most important part in our body？（Water or fat？）T：Water.Then do you know how did water come into being on the earth?Ss：No.Step 2 Fast reading（task 1）Read Paragraphs 1-3.After reading，let students watch the video of “Big Bang”，and then answer the question “How did water come into being on the earth？”（individual work）Possible answer：The explosion of the earth produced water vapour，which turned into water when the earth cooled down.Read the first three paragraphs again with the questions on the screen：1）What is the earth's atmosphere made up of?2）Why was the earth different from other planets?A．It produced a lot of heat.B．The water remained.C．Water disappeared. D．It was the oldest planet.3）Why was water very important for the beginning of life?When students meet some difficulty，the teacher can give them some hints.For example：What is the earth's atmosphere made up of?（Show students some pictures about the earth's atmosphere.）Do the exercises.（group work）Check the answers.Possible answers：1）Carbon，nitrogen，water vapour and other gases.2）B3）Water allowed the earth to dissolve harmful gases and acids into the oceans and seas.That made it possible for life to begin to develop.Step 3 Intensive reading（task 2）T：When water came into being on the earth，life began.Then do you know how the lifedeveloped?Read the whole text and finish the chart.（pair work）Development of LifeAsk two students to write their answers on the blackboard.Possible answers：1．dust2．globe3．atmosphere4．Water5．plants6．oxygen7．land8．amphibians 9．dinosaurs10．mammalsStep 4 Have a discussion（task 3）Through the writer's description，we learned the development of life.It's a long and slow process.And the earth is the best place for all the living things to live on.But human beings didn't take good care of it.Listen to the last paragraph twice with books closed.Choose the best answers.（individual work）1）What problem is caused by human beings?A．They exist everywhere on the earth.B．They cause global warming.C．They find new methods of growing crops.D．They enjoy hunting and fishing.2）From the last paragraph we can infer that the author is a little ______.A．happy B．careless C．worried D．excitedPossible answers：1）B2）CNow we learn that human beings cause global warming.That is the green house effect.If the earth may become too hot for the lives on it，what will our future be like？And what can we do to protect our earth?Please have a discussion according to the questions.（group work）Questions：1）What will our future be like if the earth becomes too hot to live?2）What can we do to protect our earth?Notes：The green house effect is the main cause of the melt of iceberg，drought，floods and insect pest.Everyone on the earth must take action to protect our earth.For example，we can plant many trees.We must do our best to stop polluting our environment.Many new laws should be passed to place strict control over industrial pollution.Educate people in fighting pollution.Ask some groups to present their opinions.Step 5 Self-assessmentWrite down your opinions according to the questions in the card.1）Can you give a brief introduction to how the universe developed，how life began on the earth and the development of life in your own words?2）What strategies of reading have you learned in the class?3）Are you active in the class?4）What problems did you have in reading?5）What help do you need from the teacher?Step 6 Homework1）Please try your best to retell the passage in your own words.2）Write a short passage according to what we have discussed.The title is “How to Protect the Earth”．About 120 words.。
人教版英语必修三课后练：Unit 4 Astronomy：the science Section 1 课后含答案
Unit 4Section ⅠⅠ.单句语法填空1．New technologies have made it possible to turn out new products faster and at a lower cost.解析：考查代词。
句意：新技术使更快更低廉地生产新产品成为可能。
it作形式宾语，真正的宾语为后面的不定式短语。
2．The festival of this year has been a great success，unlike the year before when it rained non-stop.解析：考查介词。
句意：今年这个节日过得很成功，不像前年过节时，雨下个不停。
unlike 不同，不像。
3．People of Chitian County，Japan，had been always trying hard to keep themselves from being_hurt(hurt) by the tsunami(海啸)，but unfortunately it happened.解析：考查固定搭配和语态。
句意：日本池田县的人们一直努力避免海啸的伤害，但是不幸的事情还是发生了。
keep…from doing…阻止……做……。
该处具有被动含义，故用being done。
4．The worker earned little money a month，so he had to exist on only fast noodles.解析：考查动词短语。
句意：这个工人一个月挣的钱很少，因此不得不靠方便面度日。
exist on靠……生存。
5．No one is to_leave(leave) the building without the permission of the policemen.解析：考查固定搭配。
句意：没有警察的允许，任何人都不得离开这座大楼。
高一英语人教版必修三Unit4 Using language 教案 Word版含解析
Using languageStep1. Lead inT: We have learnt a lot about astronomy, have you got interested in it? If you are going to study astronomy, what problem will you face most?S2:Gravity.T: What is gravity?S3: Everything will fall back to the earth if it is dropped or thrown away. The pull of the earth is called gravity.T: Quite right. Who first got the idea of gravity?S4: Isaac Newton.T: How did he get the idea?S5: One day he was sitting under the tree. He saw an apple fall, which made him get the idea. Besides Newton, are there any other scientists who made a great contribution to the idea of gravity?S6: Albert Einstein, Stephen Hawking.T: How did each of them think of gravity? Or did they share the same idea of gravity? Come on, the tape will tell you.Step 2 Listening1.Listen to the tape and choose the best main idea of the listening passage (Ex.2 P30).Main idea: ①I heard about how three men made mistakes when they tried to describe gravity.②I heard about how three men wanted to find out about the beginning of the universe.③I heard about how the idea of gravity has developed over a long period of time.④I heard about three scientists and their work.The best answer : ③2.Listen to the tape again and fill in the chart in Ex. 1 on P30.into which matter has fallen and from which nothing can escape —not even light. So we can’t see a black hole. A black hole exerts a strong gravitational pull and yet it has no matter. It is only space - or so we think.)Step3.Reading1.Fast readingT: All the three great scientists Newton, Einstein and Hawking played an important role in the development of ideas of gravity. Would you like to know more about gravity?Ss: Yes.T: Is the moon’s gravity the same as that of the earth?S1: No.T: Read fast to see how many times would the force of gravity change?S2: Three.2.Careful readingT: What are the three times? How would the force of gravity change?3.SummaryT: Good! I am sure you must know more about the gravity. Suppose you are asked to make a summary about the trip, will you try? You only need to fill the blacks and the first word has been given.Last month I visited the moon with my friend. Before we left, I was told the force of gravity would change three times on our journey. Then we took off. As we left the earth, I became very heavy. Gradually the weight lessened. When I was in space, it disappeared. We floated weightlessly in the cabin and I cheered up. When I was on the moon, I was surprised to find out even walking needs lots of practice now that gravity changed. The returning of the earth was very frightening. We were amazed to watch fire break out on the outside of the ship.Step4. Reading taskT：Great! But just imagine that the moon has great gravity, then what will happen?S3: It will pull us.T: Right, maybe when we are approaching it, we will be caught in it. So let’s come to the black hole.T: What are in the black hole?S: A large circle of lights going round an empty space.T: What is the circle of lights?S: Large stars.T: What is the empty space like?S: It looks like a mouth needing to be fed.T: How did they feel?S: They watched in shock and amazement as a large sun suddenly disappeared into the hole.T: So what did they decide to do?S: They decided to turn the spaceship away from the hole .T: What was happening?S: not move--- jump and move around the edge of the outside of the hole--- pulling us slowly into its “mouth”--- go faster and faster.T: What did the author feel?S: feel sick, the watch moves slower and slower, my mouth dry, close my eyes.T: It seemed that they would be caught by the gravity of a “black hole”.But what happened later?S: jump again--- increase its speed--- as fast as light--- flew like a bird.T: This time, how was the author affected?S: was bumped and banged--- able to look around us--- the computer started working again.T: What did the author feel?S: Exciting.T: Why?S: They realized that they had discovered something new about “black hole”---- They “eat’ some objects but “spit” other objects out.Step5. Homework1.Search for more about the black hole.2.Read these two passages again to find out how to organize a story.。