Book3Unit4导学案学生版定稿.docx

1、Book3Unit4导学案学生版定稿必修3 导学案Unit 4 Astronomy: the science of the starsClass:_ No: _ Group:_ Name:_Part 1 Words and Expressions【使用说明与学法指导】1. 预习案：I. 练读词汇表、听录音跟读。 II. 熟背词汇拓展表。2. 练习案：堂上使用或课后作业，熟读熟记。【学习目标】1. 熟读掌握本单元词汇表，并记住适当的拓展词汇。2. 对本单元的词汇熟练运用。3. 能够在课文阅读中加深对词汇的理解和运用。【预习案】Task: 练读课本P 97-98词汇表，跟读词汇录音。把下列拓展抄到

2、词汇表里，并熟记。词汇拓展词汇拓展systemsystematic adj. 有系统的，有规则的existexistence n. existent adj. religionreligious adj.puzzleadj. puzzled 感到迷惑的puzzling 令人迷惑的theorytheoretical adj. 理论的biologybiological adj.billionbillionaire n. 亿万富翁billions of 数以亿计的；亿万satelliteman-made satellite 人造卫星violentviolence n.violently adj.ge

3、ntlegently adv.in timeon time 按时finally/at last/eventually 最终physicistphysics n. 物理（学）physical adj. 物理学的;身体的physically adv身体上unlikedislike vt. 不喜欢; 厌恶extinctextinction n.fundamentalfundamentally adv. 基础地; 根本地; 从根本上;crashcrash down 猛然倒下air crash 飞机失事presencepresent adj. 现在的; 目前的; 出席的; v. 颁发；授予；呈献； n.

4、 现在; 礼物;lessenless adj. 较少的（little的比较级）; 较小的; adv. 较少地，较小地;harmfulharm v.&n.be harmful to=do harm toweightlesslyweigh v. 称的重量; 权衡weight n. 重量，体重 weightless adj. 没有重量的，失重的，无重力的;chainchain vt. 用铁链锁住; 监禁，束缚;now thatsincereactionreact v. exhaustexhausted adj. 耗尽的; 用完的; 筋疲力尽的; 精疲力竭的;exhausting adj. 令人筋疲力

5、尽的lay laid, laid, laying watch out forlook out formy notes（此外，我还想到了以下拓展)【训练案】一 单词填空：1. （天文学）is the scientific study of the stars, planets, and other natural objects in space.2. Over the years several similar （理论）have been put forward.3. We use a （地球仪）in our geography class.4. Many cinema-goers were

6、shocked by the films (暴力的) and tragic end.5. At least this second meeting had helped to thaw(缓和) the (气氛). 6. Well all be arrested! Thomas yelled, which was most (不像)him.7. Clothes are a (基本的) form of self-expression.8. Stephen noticed that the people around him looked cheered by his （出现、在场）.9. Frie

7、ndship (增加) joys and divides griefs.10. The brain requires a constant supply of （氧气）.11. He completely ignored all these facts as though they never (存在).12. Jimmy is adopted and (因此) unrelated to Beth by blood.13. My sister （使迷惑） me and causes me anxiety.14. The （生物学家）advanced a new theory of life.1

8、5. An apple falls down because of （重力）.16. The two countries signed an agreement to jointly launch (卫星).17. If (气候) changes continue, we will suffer the consequences.18. The scientist could not calculate when the （太空船）would reach the Jupiter.19. I let myself out into the street and （拉）the door shut.

9、20. Some leaves were （漂浮）around on the still lake.二 单句语法填空：1. Most （religious）teach you to be truthful and self-disciplined.2. (globe) warming is a real problem.3. The French government called for an end to the (violent).4. Language is something which （fundamental）distinguishes humans from animals.5

10、. There is a general awareness that smoking is （harm）.6. They kept me (chain) up every night and released me each day.7. Grace （lay）out the knives and forks at the lunch-table.8. Surely my (exist) cannot be so purposeless?9. Put on rain boot when washing floor, to prevent yourself from （slip）down.10

11、. Critics remain （puzzle）by the British election results.11. At （presence）children under 14 are not permitted in bars.12. He laid his hand （gentle）on her head.13. He was awarded the Nobel Prize for (physicist) in 1985.14. The plant is now in danger of (extinct).15. The lifeboat (crash)against the si

12、de of the sinking ship.16. Regular exercise can help to （less）the pain.17. I cheered up immediately and floated _(weigh) around in our spaceship cabin watching the earth becoming smaller and the moon larger.18. I didnt quite get the hang his argument.19. I was in a nightclub in Brixton and a fight b

13、roke .20. After such a long and （exhaust）day, the only thing she wanted was a good nights sleep.Part 2 Language Points in Reading 1【使用说明与学法指导】1. 预习部分：I. 精读课文，互译文中的词汇、句型及语法结构。 II. 记下自己的疑问，以备堂上讨论，释疑。2. 探究部分：堂上完成。3. 练习部分：堂上或课后完成。【学习目标】1. 熟读掌握Reading 1中出现的语言点，温故知新。2. 重点掌握Reading 1语言点重难点的运用。【预习案】温故知新：文中表

14、达法互译或按课文填空。正文QsHOW LIFE BEGAN ON THE EARTHNo one knows exactly how the earth began(_从句), _(由于，因为) it happened so long ago. However,_(根据) a _ (广泛接受的) theory, the universe began with a Big Bang that threw matter _ (四面八方). After that, atoms _ (开始去做.*begin doing sth.) form and combine to create stars an

15、d other bodies.For several billion years after the Big Bang, the earth was still just a cloud of dust. What it was to become (_从句；be to do sth. 计划，安排做.) was uncertain until between 4.5 and 3.8 billion years ago when the dust settled into a solid globe(_从句). The earth became _ violent_ (如此.以致于.) it w

16、as not clear whether the shape would last or not (_从句). It exploded loudly_fire and rock. They were in time to produce carbon, nitrogen, water vapour and other gases, which were to make the earths atmosphere . What is even more important (_从句) is that as the earth cooled down, water began to appear

17、on its surface (_从句).Water had also appeared _ other planets like Mars but, unlike the earth, it had disappeared later. It was not immediately obvious that water was to be fundamental to the development of life (_从句; be fundamental to.对.是必要的/根本的). What many scientists believe (_从句) is that the conti

18、nued presence of water _ the earth_(允许.做.) dissolve harmful gases and acids into the oceans and seas. This produced a chain reaction, which made_possible for life to develop ( it 作形式宾语).Many millions of years later, the first _ (极其; 非常) small plants began to appear_the surface of the water. They mul

19、tiplied and _ the oceans and seas _ (用.装满) oxygen, which encouraged the later development of early shellfish and all sorts of fish (all sorts of _). Next, green plants began to grow _ land. They were followed in time by land animals. _were insects. _ (一些.另一些), _ (过去分词定语), were able to live on land_

20、(也) in the water. Later when the plants grew into forests, reptiles appeared _(第一次, 作状语). They produced young generally_ (by+v-ing 通过做.). After that, some huge animals, _ (过去分词作定语), developed. They laid eggs too and existed _ the earth for more than 140 million years. However, 65 million years ago t

21、he age of the dinosaurs ended. Why they suddenly disappeared (_从句) still remains a mystery. This disappearance made possible_ (.的出现) mammals on the earth. These animals _ (与.不一样) all life forms in the past, because they gave birth to young baby animals and produced milk to feed them.Finally about 2.

22、6 million years ago some small clever animals, now _hands and feet, appeared and spread_ (遍及各个角落). Thus they have, in their 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, which p

23、revents heat from escaping from the earth into space. _(由于这样), many scientists believe the earth may become_hot _(太.以致不能.) live on. So whether life will continue on the earth for millions of years to come (_从句) will depend on whether this problem can be solved（_从句）. Useful expressions: according to

24、根据. lay eggs 下蛋 allow sb. to do sth. 允许.做. be different from 与.不同 fill. with.用.装满. as a result of this 由于这样 for the first time 第一次 depend on 依赖；依靠 in time 及时，终于 be harmful to 对.有害 give birth to 产生；分娩 in ones turn 轮到某人 prevent.from 阻止；制止 【探究案】Key words and expressions in Reading 1 1. However, accordi

25、ng to a widely accepted theory, the universe began with a “Big Bang”. 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【拓展】begin with_以开始；由作为开头to begin with 首先；第一点【例句】1) The proceedings will _a speech to welcome the guests.大会议程首先是向来宾致欢迎辞。2) _, she is too young for that kind of job.首先，她做这种工作年纪还太轻。2. They were in time to

26、produce carbon dioxide, nitrogen, water vapour and other gases. 它们最终产生了二氧化碳、氮、水蒸气和其他气体。【拓展】in time 1. _ 2. 迟早, 最后_ 准时，按时 at times有时at a time每次in no time立刻；马上 _同时at one time一度；从前at no time绝不(置于句首时，句子常用_) 【例句】1) Fortunately a soldier came to rescue_to save the drowning boy.2) You will succeed _as long

27、 as you dont give up.3) _ should we give in to difficulties.4) Do one thing _and do it well.5) He behaves very oddly _. I dont think hes quiet all there.3. Water had also appeared on other planets like Mars but unlike the earth，it had disappeared later.水也出现在像火星那样的其他行星上，但和地球不同，其他行星上的水后来都消失了。【词语链接】dis

28、like n反感，不喜爱 vt.不喜欢，厌恶likely adj可能的 unlikely adj不可能的be likely to do sth._Its likely that._【例句】1) Its more than _ the votes will have to be counted again2) Her latest novel is quite _ her earlier work.3) If you go on like that youll get yourself _4) I was very interested in the lecture, _(不像其他学生).4.

29、What many scientists believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas. 许多科学家认为水的长期存在使地球得以把有害的气体和酸溶解在海洋里。【拓展】harmful 有害的， _对有害harm n& vt.伤害；损害_do sb harm对某人有害There is no _in doing sth做某事没有害处_ adj.无害的harmlessness n无害【例句】1) Drunkenness(醉酒)_ our health (对健康有害的).2) Nuclear power(核能) will_