东明一中高一必修三英语unit 4导学案1
高一英语必修3Unit4导学案
Book 3 Unit4 words and expressions 导学案【学习目标】learn the pronunciation and the usage of the new words【重点】 how to use the useful expressions.【难点】 use the useful expressions to make sentences 【Self- study 自主学习】A. 预习课本 P97, B00K3 UNIT4的单词。
B. 根据构词法，写出以下单词。
1. astronomy n. 天文学 ___________________ _ n. 天文学家2. religion n. 宗教,宗教信仰 ______________ ________ adj 宗教的3. globe n. 球体,地球仪,地球 ______________________________________ ______ adj 全球性的,激烈的4. violent adj. 猛烈的,强暴的,猛烈的_ n 暴力,猛烈5. fundamental adj 基本的,基础的 ________ ____________ n. 基础,根本6. lay v 放下,摆设,产（蛋） _____________ __（过去式） _______ （ 过去分词 ）lie v 说谎 _____________ （过去式 ） ____________________ ____ （ 过去分词 ）lie v 躺,平放 ____________________ （过去式） ___________ （ 过去分词 ）7. prevent v 预防,防止 __________________ n. 预防,防止 ________________ adj. 可预防 的8. harmful adj. 有害的 _______________ n&v. 伤害9. exist v. 存在,生存 ____________________ n. 存在,生存 ___________________ adj. 存在的10. puzzle n. 谜,难题 v 使迷惑 ______________ adj. 感到疑惑的 ______________ adj. 令人疑惑的11. biology n. 生物学 _________________ n. 生物学家12. gentle adj. 温和的,文雅的 _______________ adv. 温和地 _________________ n. 绅士 v 13. physicist n. 物理学家 _____________ n. 物理学 _____________ adj. 身体的,物理学的 14. float v. 漂浮 ________________ adj. 浮动的,流动性的 15. exhaust v 用尽，耗尽 _______________ adj. 筋疲力尽的16. weigh v 称重，权衡____________ n. 重量____________________ adj. 无重力的___________________ adv. 失重地【Cooperative study 合作探究】Task1.read the new words and pay attention to the pronunciation.Task2.1. harmful adj. 有害的harmless adj 无害的harm n&v 损害，危害词组：be harmful to 对...... 有害do harm to sb=do sb harm 对某人有害It is obvious that drinking too much is harmful to health. 翻译：It wouldn't do any harm to him to work harder. 翻译This drug is completely harmless to people. 翻译【活学活用】吸烟有害健康。
高一英语必修3第4单元一课时导学案
Thenreaditquicklytocheckifyouareright.
Task2.Skimming
Skimoverthepassageandfindthemainideaofeachparagraph.(Matchthe
mainideaofeachparagraph.)
Paragraph1:a.Theimportanceofwaterforlife
Paragraph2:b.Thedevelopmentofplantsandanimalsontheearth
Paragraph3:c.Theformationoftheearth
Task4.Detailedreading
Para1:
【摘要】：“高一英语必修3unit2Healthyeating导学案”本文通过教案让学
生掌握课本知识，希望对大家的教学有所帮助：
Step1.learningaboutlanguagepoints
1.dietn.日beona
1.Theoriginoflifeonearthisaquestionthatinterestsastronomers.Whatdo
youknowaboutit?
2.Earthreligionandculturehasitsownideasabouthowlifebeganontheearth.
Whatdoyouknow?
diet/goonadiet节食Heisdietingtoloseweight.他正在节食以减肥2.
balancevt.&vi.平衡;权衡n.平衡;天平balancedadj.平衡的keepones
高一英语必修三导学案unit4学生版
Unit 4 Astronomy: the science of the stars周背文章--------邀请信Dear Ms. Smith,I'm Li Hua, chairman of the Students Union of Yucai Middle School, which is close to your university. I'm writing to invite you to be a judge at our English speech contest which will be held in our school on June 15, at Room 501. It will start at 2:00 pm and last for about three hours. Ten students will deliver their speeches onthe given topic “Man and Nature”. I would appreciate it if you could accept our invitation. If you have any questions, please contact me at 44876655. I am looking forward to your early reply.HOW LIFE BEGAN ON THE EARTH1. No one knows exactly______ the earth began, as it happened so long ago. However, according to a _____ (wide) accepted theory, the universe began with a "Big Bang" ______ threw matter in all directions. After that, atoms began to form and combine to create stars and other bodies.For several billion years after the "Big Bang", the earth was still just a cloud of dust. ____ it was to become was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe. The earth became ___violent that it was not clear ______ the shape would last or not. It exploded loudly with fire and rock. They were in time to produce carbon, nitrogen, water vapour and other gases, _____ were to make the earth's atmosphere. _____ is even more important is _______ as the earth cooled down, water began to appear on its surface.Water had also appeared on other planets like Mars but, ______(不像)the earth, it had disappeared later. It was not ______ (immediate) obvious that water was to be fundamental to the _______(develop)of life. ______many scientists believe is _____the continued presence of water allowed the earth to dissolve______ (harm) gases and acids into the oceans and seas. This produced a chain reaction, which made ____possible for life to develop.2. 改错 Many millions of years late, the first extreme small plants began to appear on the surface of the water. They multiplied and filled the oceans and seas with oxygen, that encouraged the later development of early shellfish and all sorts of fish. Next, green plants began to grow in land. They are followed in time by land animals. Some were insects. The others, called amphibians, were able to live on land as well as in the water. Later when the plants grew into forests, reptiles appeared the first time. They produced young generally by lay eggs. After that, some huge animals, called dinosaurs, developed. They laid eggs too and existed on the earth for more than 140 million years. However, 65 million years ago the age of the dinosaurs ended. Why they suddenly disappeared still remain a mystery. This disappearance made the rise of mammals possible on the earth. These animals were different from all life forms in the past, because they gave birth to young baby animals and produced milk to feed it.(10处)3. Finally about 2.6 million years ago some small clever animals, now with hands and feet, appeared and spread all over the earth. Thus they have, in _____ turn, become the most important animals on the planet. But they are not looking after the earth very well. They are putting too much carbon dioxide into the atmosphere, _____ prevents heat from escaping from the earth into space. As _____result of this, many scientists believe the earth may become too hot to live on. So ______life will continue on the earth for millions of years to come will depend on ______this problem can be solved.A VISIT TO THE MOON4. Last month I was lucky enough to have a chance _____( make) a trip into space with my friend Li Yanping, an astronomer. We visited the moon in our spaceship!Before we left, Li Yanping explained _____ me that the force of gravity would change three times on our journey and _____ the first change would be the most powerful. Then we were off. As the rocket rose into the air, we were pushed back into our seats because we were trying to escape _____ pull of the earth's gravity. It was _____ hard that we could not say anything to each other. _______ (Gradual) the weight lessened and I was able to talk to him. "Why is the spaceship not falling back the earth? On the earth if I fall from a tree I will fall to the ground." I asked. "We are too far from the earth now to feel its pull," he explained, "so we feel ____ _____ there is no gravity at all. When we get closer to the moon, we shall feel its gravity pulling us, but it will not be as strong a pull as the earth's." I cheered up immediately and float weightlessly around in our spaceship cabin ______ (watch) the earth become smaller and the moon larger.5. 短改 When we got there, I wanted to explore immediate. "Come on," I said. "If you are right, my weight will be less than on the earth because the moon is small and I will be able to move more freely. I might even grow taller if I stay here long enough. I shall certainly weigh less!" I laughed and climb down the steps from the spaceship. So when I tried to step forward, I found I was carried twice so far as on the earth and fell over. "Oh dear," I cried, "walking does need a bit practice now that gravity has changed." After a while I got the hang of it and we began to enjoy us. (7处)6. _______ ( Leave) the moon's gravity was not as______ (pain) as leaving the earth's. But returning to the earth was very_______( frighten). We watched,______ (amaze) as fire broke out on the outside of the spaceship as the earth's gravity increased. Again we were pushed hard into our seats as we came back _____ land. "That was very______ (exhaust) but very exciting too," I said. "Now I know much more about gravity! Do you think we could visit some stars next time?" "Of course," he smiled, "_____ star would you like to go to?"用适当的连接词完成句子。
必修3第4单元reading导学案
Book 3 Unit 4 How Life Began On The Earth(Warming up and Reading)导学案学习目标：1. 学习掌握课文中的重点单词，短语和句型2. 阅读课文并理解课文大意★课前预读：Task1:见创新练习册第57页1.认知词汇部分I. II.2.话题导入部分Task2:Translate the following into English(find the answers in the text):1.太阳系_______________________2. 把…匹配在一起_________________________3.生命的起源____________________4.宗教与文化______________________________5.根据__________________________6. 一个广泛接受的理论_____________________7.以…开始；从…开始____________ 8.在四面八方______________________________9.一团灰尘______________________ 10.及时，最终_____________________________11.冷却下来_____________________ 12.是…的基础_____________________________13.允许某人做某事_______________ 14.把…溶解到… _________________________15.一系列的反应_________________ 16.在水的表面____________________________17.各种各样的___________________ 18. 第一次________________________________19.下蛋_________________________ 20.在地球上_______________________________21.超过，多于___________________ 22….的时代_______________________________23.仍然是个谜___________________ 24.不同于_________________________________25.生产，分娩___________________ 26.轮到某人，接着_________________________27.阻止…做某事_________________ 28.因为，由于_____________________________29.未来的数百万年_______________ 30.依靠，取决于___________________________ ★课内探究：Ⅰ.Fast-reading1．Match the main idea with the proper paragraph.Para. 1 A．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.2. Main idea of the passage:A brief introduction on how the universe and how life on the earth.3. 关注课文中的数字，找出所发生的事件4.5-3.8 billion years ago ________________________________________________________Many million years later________________________________________________________ for 140 million years___________________________________________________________65 million years ago____________________________________________________________2.6 million years ago___________________________________________________________ Ⅱ. Careful Reading1. Para.1: discussa. How did the universe begin?________________________________________________________________________b. What happened after the “Big Bang”?_______________________________________________________________________ c. What does “bodies” mean here?A. Persons or animals’ bodiesB. Planets and stars2.Para2: discuss1. What was the earth like for several billion years after the Big Bang?________________________________________________________________________2. What was the earth like between 4.5 and3.8 billion years ago?________________________________________________________________________3.Para. 3 whether the following sentences are true or false.( ) 1. Water on the earth disappeared later.( ) 2. Water was necessary and important to the development of life.( ) 3. Water was helpful in dissolving the harmful gases and acids into the oceans and seas.4.Para. 4 find the development of life.III. Post-reading细读课文,完成排序1. Insects and amphibians appeared2. Dinosaurs appeared3. The earth became a solid ball4. Small plants grew on the water5. Reptiles appeared6. Plants began to grow on dry land7. The earth was a cloud of dust 8. Water appeared on the earth.9. Shellfish and other fish appeared 10. The universe began with a BIG BANG11. Clever animals with hands and feet appeared 12. Mammals appeared___________________________________________________★课堂检测： 见创新练习册第62页 课文缩写语法填空★课后提升： 用创新练习册第60页四个必备句型翻译下列各句。
英语必修三第四单元词汇短语导学案
Book 3 Unit 4 Astronomy: the Science of the Stars词汇短语课型导学案（教师版）一. 学习过程Part 1重点词汇、短语Ⅰ. 重点词汇1. system n. 系统；体系；制度2. theory n. 学说；理论3. violent adj. 猛烈的；激烈的；强暴的4. unlike prep. 不同；不像5. harmful adj. 有害的6. exist 存在；生存7. pull 拉；拖；牵引力8. puzzle n. 谜；难题9. astronomer n. 天文学家10. atmosphere n. 大气层11. violent adj. 猛烈的12. global adj. 全球性的Ⅱ. 重点短语1.in time 及时；终于2. lay eggs 下蛋3. give birth to 产生；分娩4. in one’s turn 轮到某人；接着5. prevent from 阻止；制止6. cheer up 感到高兴7. break out突发；爆发8. now that 既然9. watch out 当心；提防；密切关注10. in time 及时Part 2 合作探究Discuss in groups and fill in the blanks1. However, according to a widely accepted theory, the universe began with a “Big Bang” that threw matter in all directions. 然而，一种普遍为人们所接受的理论是：宇宙起源于一次大爆炸，这次大爆炸将物质投射到四面八方。
1）theory n. 学说；理论〖拓展〗in theory 理论上in practice实际上〖运用〗Your idea is good in theory, but it doesn't work in practice. 你的计划理论上很好，但在实际中行不通。
【原创】导学案：必修3 Unit 4 (Grammar)
3月5日导学案Book3 Unit4 Period 4自学Book 3Unit 4Astronomy:the science of the stars第二篇课文A VISIT TO THE MOON课文原文：A VISIT TO THE MOONLast month I was lucky enough to have a chance to make a trip into space with my friend Li Yanping, an astronomer. We visited the moon in our spaceship!Before we left, Li Yanping explained to me that the force of gravity would change three times on our journey and that the first change would be the most powerful. Then we were off. As the rocket rose into the air, we were pushed back into our seats because we were trying to escape the pull of the earth's gravity. It was so hard that we could not say anything to each other. Gradually the weight lessened and I was able to talk to him. "Why is the spaceship not falling back to the earth? On the earth if I fall from a tree I will fall to the ground." I asked. "We are too far from the earth now to feel its pull," he explained, "so we feel as if there is no gravity at all. When we get closer to the moon, we shall feel its gravity pulling us, but it will not be as strong a pull as the earth's." I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.When we got there, I wanted to explore immediately. "Come on," I said. "If you are right, my mass will be less than on the earth because the moon is smaller and I will be able to move more freely. I might even grow taller if I stay here long enough. I shall certainly weigh less!" I laughed and climbed down the steps from the spaceship. But when I tried to step forward, I found I was carried twice as far as on the earth and fell over. "Oh dear," I cried, "walking does need a bit of practice now that gravity has changed." After a while I got the hang of it and we began to enjoy ourselves.Leaving the moon's gravity was not as painful as leaving the earth's. But returning to the earth was very frightening. We watched, amazed as fire broke out on the outside of the spaceship as the earth's gravity increased. Again we were pushed hard into our seats as we came back to land. "That was very exhausting but very exciting too," I said. "Now I know much more about gravity! Do you think we could visit some stars next time?" "Of course," he smiled, "which star would you like to go to?"Period4预习导学预习目标：掌握下列重点词或词组或句型的用法。
必修3Unit4阅读导学案
Module 3 Unit 4 Astronomy: the science of the stars （Reading）导学案学习目标: 1.了解地球上生命的起源和进化过程。
2. 进一步训练阅读说明文技巧。
3. 激发大家对天文知识的兴趣, 培养科学探索精神。
学法指导：1.探究预习案第一、二题；2.以课文内容为载体在阅读中充分利用各种阅读技巧以提升阅读特别是泛读能力；3.以课本为纲完成探究案及训练案中的阅读练习；第一部分：预习案一、Answer the following question.In our solar system eight planets circle around the sun. What are they?(Note：According to the present day scientific study, there are only eight planets, with the Pluto excluded.)二、Read the following passage and answer the questions.Newton is the founder of the law of universal gravitation(万有引力定律). Albert Einstein is the founder of Relativity Theory(相对论) and Quantum Theory(量子力学), which have great efforts on human’s thoughts. Stephen Harking made great progress on Quantum Theory. His work makes it possible for human beings to understand discovering universe by some unusual possibility. He was honored as the successor(继承者) of Albert Einstein. He showed the Einstein’s General Theory of Relativity(广义相对论) implied space and time would have a beginning in the Big Bang(宇宙大爆炸)and an end in black holes. His another conjecture(推想) is that the universe has no edge or boundary(边界)in imaginary time.1.How many scientists are mentioned in the passage? Who are they?2.What theories did they found?三、Pre-readingThe origin of life on earth is a question that interests astronomers. What do you know about it?第二部分：探究及训练案一、Scanning1. Look at the pictures on pages 25-26 and discuss: In what order is the text developed? How manyparts can the passage be divided into?2. Read the passage and match the main idea with each paragraph.Para. 1 A. The formation(形成) of the earth.Para. 2 B. The importance of water for life.Para. 3 C. A widely accepted theory about the formation of the universe.Para. 4 D. The arrival of humans and their impact on the earth.Para. 5 E. The development of plants and animals on the earth. 二、Careful reading1. Read the passage para. by para. and do the following exercises.Para. 11) How did the universe begin?2) What happened to all the matter after the Big Bang?Para. 21) How old is the earth?2) What is the earth’s atmosphere made up of?3) How did water come into being on the earth?Para. 31) Why was the earth different from other plants? (Choose the best answer)A. It produced a lot of heatB. The water remainedC water disappeared D. It was the oldest planet2) Why was water very important for the beginning of life?Para. 41) Why did animals first appear in the seas?2) Why were mammals different from other animals?Para. 51) Why is it wrong in films and stories to show dinosaurs and people together?2) What problem is caused by human beings? (Choose the best answer)A .They exist everywhere on the earthB .They cause global warmingC. They find new methods of growing cropsD. They enjoy hunting and fishing2. True or false.( ) 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 then 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.第三部分当堂检测填空(根据课文内容完成下面表格)Time What happenedBig Bang ______ began to form and combine to create stars and other bodies.Between 4.5 and 3.8 billionyears ago ●Dust settled into a solid ______ .The earth exploded to produce its___________ .●The continued presence of ________ allowed the earth to dissolve harmful gases and _____ into the oceans and seasMany millions of years later ●The first small plants on the surface of the water produced_______ .●Early _______ and all sorts of fish appeared.●Green _______ began to grow on land.●Insects and___________ appeared.Many millions of years later ●________ appeared and they laid eggs.●Dinosaurs developed, laid eggs and _______ for more than 140 million years.●Mammals rose and ____________ babies.About 2.6 million years ago ●Some small ______ animals with hands and feet appeared and______ all over the earth.Now Humans produce too much carbon _______, making the earth too hot.Module 3 Unit 4 Reading导学案答案第一部分：预习案一、The Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.二、1. THREE 2. Newton- law of universal gravitation(万有引力定律)Albert- Relativity Theory(相对论) and Quantum Theory(量子力学)Stephen Harking- Black holes第二部分：探究案二、1. Para.1-C;2-A;3-B;4-E;5-D 2. Time三、1.ABDC 2. TFTFFFF第三部分：frustrated, customers, followed, slimming/fiber, curiosity, forward, believe, amazed, library, research, realized, tired, energy-giving, competition。
高中英语必修三Unit4Astronomythescienceofthestars导学案
课堂导学
Байду номын сангаас
1.It exploded loudly with fire and rock,which were in time to produce the water
vapor,carbon dioxide,oxygen,nitrogen and other gases,... 它（地球）巨大的爆炸喷出了烈火与岩石，最终产生了水蒸气、二氧化碳、氧、氮和其
氧原子 )
‘ O’ ,anydou are hydrogen atom(氢原子 ) ‘ H’ .Sthoe combine between us is very steady as
The girl- friend asked, “Then where is the other ‘H’?”
3.This encouraged the development
housing development 住宅区
填空
(3)In Africa,some countries are _____ (develop) countries.They are badly need other countries aid. (4)With the ______ (develop) of economy,our society still needs the rapid development of civilization. 答案： (1)develops (2)developed 4.They were the last group of animals and they were different because they produced their
(2)We don ’ t allow making a noise in the meeting room of the school.
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人教版新课标英语必修3 Unit 4 Astronomy: the science of the stars东明一中高一(2013级)英语必修三Unit4导学案(1) Class_______ Name_________编写：贾卫宽审核：李建国，胡风霞第1课时(新授课)：Vocabulary, Warming up, Pre-reading & Reading (1)◇学习目标：1.学生自主熟练朗读、拼写本课时的黑体单词和短语。
2.学生自主初步了解单元话题词汇与知识。
3.学生自主完成本课时课前与课后作业(做到书写流畅、美观、整洁) ◇学习重、难点：熟练朗读、拼写本课时的黑体单词和短语◇学习内容与过程：★课前预习1.跟录音朗读Unit 4本部分词汇(from “astronomy” to “puzzle”)并掌握黑体单词2.重点词汇、句型检测(词不离句记单词，请写出下划线词在句中的汉意)Ⅰ.重点单词掌握(A/B/C层必记)(1)Such is the education system in China. ( )(2)Theory is based on practice and in turn serves practice. ( )(3)The love that’s too violent will not last long. ()(4)Unlike his brother, he has a good sense of humor. ( )(5)Smoking is harmful to our health. ( )(6)The proper function of man is to live, but not to exist. ( )(7)How the accident happened is still a puzzle. ( )Ⅱ.重点短语掌握(A/B/C层必记)(8)A stitch in time saves nine. ( )(9)As we all know hens are born to know how to lay eggs. ( )(10)She is expected to give birth to a child next month. ( )(11)When it is in my turn, I am too excited to speak. ( )(12)We'd better take effective measures to prevent students from cheating in exams. ()Ⅲ. 话题词汇识记(A/B层必记；C层选记)(13)Nebula(星云) is a specific word concerning the field of astronomy. ( )(14)When it is a question of money, everybody is of the same religion. ( )(15)If you can count your money, you don’t have a billion ( ) dollars.(16)We have only one globe ( ). Treasure the mother nature.(17)A low carbon( ) life can be of great use for us.(18)Just as the soil is a part of the earth so is the atmosphere. ( )(19)This book stresses that communication is a fundamental ( )human skill.(20)In addition, a number of world popular chain ( ) restaurants and clubs have a branch in the city.(21)In math class, we used to add, subtract(减), multiply ( ) and divide(除) in our heads.(22)As we all know, we can't live without oxygen ( ), and the forest plays animportant role in it.(23)Thus ( ), it will do harm to children's further education.(24)But the most serious problem should be the carbon dioxide ( ) problem. Ⅳ.课文重点句式提取并背诵(A/B/C层必记)1. 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. 句式提取→be to do sth. _____________2. The earth became so violent that it was not clear whether the shape would last or not.句式提取→①so...that... _______________②it’s not clear whether...or not _______________________________3. It was not immediately obvious that water was to be fundamental to the development of life. 句式提取→it’s not obvious that... ________________4. This produce a chain reaction, which made it possible for life to develop.句式提取→make it impossible for sb./sth. to do..._______________________Ⅴ.单元话题词汇与知识积累(阅读短文并在括号内写出其汉语意思，可查词典) Astronomy1. ( ) is the oldest science 2. ( ) known to man. Thousands of years ago man looked at the stars and wondered about the heavens 3. ( ). But man was limited by six planets 4. ( ) that he could see with his eyes alone. The Greeks studied astronomy over 2,000 years ago. They could see the size, color, and brightness of a star. They could see its place in the sky. They watched the stars move as the seasons changed. But the Greeks had no tools to help themselves study the heavens. Each new tool added to the field of astronomy helped man reach out into space 5. ( ). Until there were telescopes 6. ( ), man knew a little about the moon. He did not know that the planet called Saturn 7. ( ) had rings around it. His sight was so limited that he could not see all the planets. In the early 1700s, people thought there were only six planets. Before the spectroscope (分光镜), man did not know what kind of gases 8. ( ) was in the sun or other stars. Without the radiotelescope (射电望远镜), we did not know that radio noises came from far in space. Today, astronomy is a growing science. We have learned more in the last fifty years than in the whole history of astronomy.与你分享国际天文学联合会大会于2006年08月24日通过的决议规定，“行星”指的是围绕太阳运转、自身引力足以克服其刚体力而使天体呈圆球状、能够清除其轨道附近其他物体的天体。
在太阳系传统的“九大行星”中，只有水星(Mercury)、金星(Venus)、地球(Earth)、火星(Mars)、木星(Jupiter)、土星(Saturn) 、天王星(Uranus)和海王星(Neptune)符合这些要求。
冥王星(Pluto)由于其轨道与海王星的轨道相交，不符合新的行星定义，因此被自动降级为“矮行星”。
所以，现在认为太阳系只有“八大行星”。
Ⅵ.课后作业1.同桌互相听写本课时黑体单词，检查记忆效果，以备老师下节课前抽检。
2.自读课文“How Life Began on the Earth”并预做Reading(1)学案。