unit 4 astronomy the science of the stars教学案

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宁阳二中“四步教学法”教学案
高一英语教学案（模块3）
UNIT 4 ASTRONOMY: the science of the stars
编制：冯爱丽 林建 郝利梅 高广淇
预习学案
Part One: Words and Expressions
1． 重点词汇
1. astronomy n._____________ 2. system n. __________3. theory n.____________
4. globe n._________5. violent adj._______________6. atmosphere n. __________
7. unlike adj. _________8. harmful adj. ____________9. multiply v. ____________
10. oxygen n. __________11. exist vi.____________12. puzzle n. __________v. ___________
13. biology n. __________14. satellite n.__________15. climate n._________
16. pull n/vt. ________________
二． 重点短语
1. 及时；终于___________________ 2. 产生；分娩 _______________
3. 轮到某人_____________________ 4. 阻止；制止_________________
5.挡住（光线）__________________ 6. 感到高兴____________________
7. 既然__________________ 8. 突发；爆发_________________
9. 密切注视_______________ 10. 下蛋____________________
11.依赖，取决于_____________ 12向前迈步_________________
13.和…..一样痛苦_____________ 14.爆发_____________
15.be different from___________ 16. go round…___________
17fill…with…_______________ 18.as well as _______________
19escape from_______________ 20.as…as possible _______________
21 make a trip _______________ 22.fall to the ground _______________
23.fall back _______________ 24.get close to _______________
三．词汇拓展
1. 天文学n._________ 天文学家n._________ 天文学的adj.________
宇航员n.____________
2. 宗教 n._____________宗教的adj.__________3 球体，地球仪n._________
3. 全球性的，全世界的______________ 4.猛烈的，强烈的，adj.___________
猛烈，暴行______________
5 损害，伤害n./vt._________有害的，_______无害的_________
phr.对。。。有害___________
6.存在 vi.__________存在n.______________存在的，实有的_______________7.谜；难题 n.________（使）迷惑vt/vi._________ 迷惑的，困惑的adj.____________
令人迷惑的adj.___________
8.生物, 生物学n.__________ 生物学的adj._________ 生物学家n._________
9. 物理（学）n.________ 物质的，身体的adj.____________物理学家n._________ 医生 n.________
Part two. Reading materials
长句难句:把下列句子翻译成汉语。
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.
______________________________________________________________________________________________________________________________________________
2. What is even more important is that as the earth cooled down, water began to appear on its surface.
_______________________________________________________________________
3. What many scientist believe is that the continued presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.
____________________________________________________________________________________________________________________________
4. Why they suddenly disappeared still remains a mystery.
_______________________________________________________________________
5. So whether life will continue on the earth for millions of years to come will depend on whether this problem can be solved.
_______________________________________________________________________________________________________________________
6. This produced a chain reaction, which made it possible for life to develop.
7. I cheered up immediately and floated weightlessly around in our spaceship cabin watching the earth become smaller and the moon larger.
___________________________________________________________________________________________________________________________
8. They are putting too much carbon dioxide into the atmosphere , which prevent heat from escaping from the earth into space.
________________________________________________
9. We watched, amazed as fire broke out on the outside of the spaceship as the earth’s gravity increased.
10. So we feel as if there is no gravity at all.
__________________________________________________________________________________
小组讨论：
一．Read the following statements, and decide whether they are true(T) or false(F).
(1) Our solar system is just a tiny part of an enormous group of stars and planets called a galaxy. There are billions of galaxies in the universe. Ours is called Milky Way.( )
(2) Many scientists believed that the universe began with an enormous explosion called the “Big Bang”, which happened about 30 billion years ago. ( )
(3) The sun is so large that more than a million earths would fit inside it. It looks different from other stars because it is so much nearer to Earth. ( )
【1.T】【2.F】【3.T】
Read the passage carefully and write down the main idea for each paragraph.
Paragraph 1:__________________________________________________________
【A widely accepted theory about the formation of the universe.】
Paragraph 2:__________________________________________________________
【The formation of the earth.】
Paragraph 3:__________________________________________________________
【The importance of water for life】
Paragraph 4:__________________________________________________________
【The development of plants and animals on the earth】
Paragraph 5:__________________________________________________________
【The arrival of humans and their impact on the earth.】
全员探究：
1.harmful adj.有害的
It is ______to your health to drink too much.(过量喝酒对你的身体有害) 【harmful】
Smoking is __________to one’s health.（吸烟对健康有害）【harmful】
归纳拓展：
do…harm/do harm to___________ 【对……有害】 be harmless to _________________ 【对……无害】
do more harm than good ______________【弊大于利】
Hot water will ________________the plant.(热水伤花草) 【do harm to】
I have got up early all my life, and it hasn’t ____________________(对我并没害处) 【done any harm to me】
2.exist vi. ____________________
Man can’t ______without air.(没有空气人就不能生存) 【exist】
火星上有生命吗？___________________________________________ 【Does life exist on Mars】
拓展：存在 n.________________ 【existence】
bring…into existence ____________________ 【实现；使……产生】
come into existence=come into being ___________________【形成；产生】
(1). An information bureau was brought _______existence to deal with inquiries. 【into 】
(2) When did this world come _______existence 【into】
3.puzzle n/v.
(1) n. ______________
a cross word puzzle _____________
I was in a _______about the matter.(我对这件事迷惑不解) 【puzzle】
(2) vt. _____________
The question puzzled me.=I was _________by the question. 【puzzled】
归纳拓展：adj. ____________ 困惑的【puzzled】
She listened with _____________________(困惑的表情)on her face. 【a puzzled expression】
他不知道下一步怎么办。____________________________________________【He was puzzled what to do next.】
4. in one’s turn _______________【轮到某人】【】【】【】
Then in our turn, we got on the bus one by one._____________________________
归纳拓展：
It’s one’s turn to do something. ___________________________________
It’s your turn to read, John.___________________________________
in turn ____________________【依次】
依次发言____________________【 to speak in turn】
Interest rate were cut, and in turn, share prices rose.__________________________ 【利率降了，因而股价上涨。】
take turns to do something ____________________【轮流做某事】
We _____________(轮流)to drive on the way to Canada. 【we took our turn to drive on the way to Canada.】
5. prevent …from (doing) sth.
什么也阻止不了我实现目标。_____________________________________________【Nothing can/shall prevent me from reaching my goal.】
她因病不能参加考试。___________________________________________________【She was prevented from taking the exam by illness.】
6. in time
(1).及时
我们能及时到达车站吗？________________________________________________
【Can we get to the station in time 】
(2).迟早；总有一天；终于
游泳不好学，但你迟早会学会的。________________________________________
【Swimming is difficult to learn, but you will learn it in time.】
比较：on time ___________【准时】与 in time ________________________【及时】
归纳拓展：in no time ___________【立刻；马上】；at a time ____________【一次；每次】；at one time __________【从前】
7. now that 既然，由于，充当连词，that可以省略
既然你长大了，就不应该依靠你的父母。____________________________________
【Now that you’ve grown up,you should not rely on your parents.】
Now that I’m free, I can enjoy music for a while.______________________________
【既然我有空，可以欣赏一下音乐。】【】now that 和since相似，语气较弱，强调人们已知道的事实。
主语从句
Teaching aims: Grasp the attributive clause and use it freely
课前自学（ SBP29 Discovering useful structures parts2-3）
语法知识精讲
主语从句在复合句中作主句的主语，引导主语从句的有从属连词that, whether以及连接代词who, what, which, whoever, whatever, whichever, 和连接副词when, where, why, how等。例如:
That she was chosen made us very happy.
她当选了我们很高兴。
What caused the accident is a complete mystery.
什么导致了这次事故还完全是个谜。Whoever comes to the party will receive a present.
参加聚会的每个人都将收到份礼物。
注意：上述例句中的主语从句都在句首，但为了使句子结构平衡，避免头重脚轻，常用it作形式主语，而把从句放在后面。例如：
It is a pity that she has made such a mistake.
她犯了这样一个错误，真遗憾。
It’s reported that three people were killed in the accident.
据报道，事故中三人丧生。
语法同步练习
用适当的连接词填空
1._____ he said at the meeting surprised us greatly. 【what】
2. It has been found ____plastics can be widely used in industry. 【that】
3. It worried her a lot _________her wallet was lost. 【that】
4. Can you tell me________ that man was 【who 】
5. I wonder ____we can do about the problem of pollution. 【what】
6. I know nothing about her but___ she is from Canada. 【that】
7. The reason why he has been such a success is___ he never gives up. 【that】
8.___is troubling me is ___I don’t have any experience in this kind of work. 【what;that】
当堂达标：
1． 单项填空：
1. Drinking too much ________ your health.
A. is harm to B is harmful to C. does harmful to D. harm to
2. _____that your daughter is well again, you no longer have anything to worry about.
A. Since B. Now C. As D. Because
3. He _______his hang on my shoulder.
A. laid B. lay C. lied D. lain
4. ---It’s your turn _____the text, Tom.
---I’m sorry I can’t recite it.
A. reciting B. to recite C. recited D. recite
5. When and where we _____the meeting ______still a problem.
A. have; are B. shall have; is C. had; is D. will have ; are
6. It worried her a bit _______her hair was turning grey.
A. while B. that C. if D. for
7._____she will be given the job is still under discussion.
A. Whether B. That C. If D. What
8. ______is a main subject is known to everybody.
A. English B. That English C. The English D. What English
9. The support of the students_____ the losing team and they played harder, so in the end they won the game.
A. brought up B. cheered up C. grew up D. turned up
10. They lost their way in the forest, and _____made matters worse was that the night began to fall.
A. it B. what C. which D. that
11. No one can prevent the plan ______.
A. from carrying out B. to carry out C. being carried out
D. to be carried out
12.This book is _______for a seven-year-old child to read.
A. too much difficult B. too more difficult C. much too difficult
D. more too difficult
13. The fact is ____computers are of great aid to the development of science and technology.
A. whether B. how C. that D. what
14. He is sure to learn how to repair the computer____ if he continues working hard.
A. in time B. on time C. over time D. at one time
15 People can’t afford expensive things___ the prices of daily goods going up.
A as B for C with D since
16. It is reported that the united states uses____ energy as the whole of Europe.
A as twice B. twice much C. twice much as D. twice as much
17.----How long are you staying ----I don’t know _____
A That’s B Never mind C It depends D It doesn’t matter
18The camera isn’t missing. It’s still____ where I ____ it a month ago.
A lies; lay B lies; laid C lays; lay D lays; laid
19. That’s the best way you thought of ____into dangerous areas.
A stopping people to get B to stop people getting
C keeping people getting D preventing people to get
20.Just because of his own carelessness, he was made to do it ____time.
A the second B a second C second D a twice
【1.B】【2.B】【3.A】【4.B】【5.B】【6.B】【7.A】【8.B】【9.B】【10.B】【11.C】【12.C】【13.C】【14.A】【15.C】【16.D】【17.C】【18.D】【19.B】【20.B】
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