高中英语选修六 Unit B课件

1、高中英语选修六 Unit B,1,Learning about language,Ex. 1,trend,fuel,state,consume,glance,1,2,2,1,2,高中英语选修六 Unit B,2,Ex. 2,data, kept on quantities, run out build up, catastrophe,come about consequence phenomenon,graph per even if resulted in,Learning about language,Ex. 1,It is scientists who warned that green

2、house gases would warm the earth by trapping heat energy in the atmosphere. it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.,Ex. 2,It is scientists who warned the greenhouse gases would warm the earth by trapping heat energy in the atmosphere. It

3、is the greenhouse effect that gives the earths surface the average temperature of 15 . It is fossil fuels that much of the energy used to light and heat our homes comes from.,高中英语选修六 Unit B,3,It is the developed countries that consume the most energy in the world. It is for centuries that carbon dio

4、xide has the tendency to stay in the atmosphere only for a day or less. It is their very existence that low-lying countries feel is in danger from rising sea levels. It is environmentalists who have tried to stop the earths temperature rising. It is future climate changes and their effects on our en

5、vironment that scientists want to find out about. It is by several meters that the level of the sea could rise in the years ahead because of global warming. It is outer space that might provide us with new energy sources in the future.,The use of it (2),Unit 4 Grammar,高中英语选修六 Unit B,4,在上一单元我们已经讲解了it

6、在句中可以用作许多成分, 在本单元我们用图表的形式进行整理使同学们对it的用法有系统的掌握。,高中英语选修六 Unit B,5,高中英语选修六 Unit B,6,高中英语选修六 Unit B,7,高中英语选修六 Unit B,8,高中英语选修六 Unit B,9,高中英语选修六 Unit B,10,高中英语选修六 Unit B,11,高中英语选修六 Unit B,12,高中英语选修六 Unit B,13,高中英语选修六 Unit B,14,高中英语选修六 Unit B,15,我们用图表的形式对it的用 法进行的归纳, 相信同学们 已经对it的用法有了更清晰 的认识。 接下来我们对it在强调句中

7、 的用法做一小结。,高中英语选修六 Unit B,16,用在强调句型中, 为了强调句子的 某一成分(通常是主语、宾语或状语), 常用结构: It is / was 被强调部分that (who) I met Tom in the street yesterday,高中英语选修六 Unit B,17, It was I who (that) met Tom in the street yesterday. It was Tom that I met in the street yesterday. It was in the street that I met Tom yesterday. It

8、 was yesterday that I met Tom in the street.,主语,宾语,时间状语,地点状语,高中英语选修六 Unit B,18,1. Peter lent us the money. 2. They want money. 3. All this happened on Monday.,It was Peter who lent us the money.,It is money that they want.,It was on Monday that all this happened.,根据划线部分把下列句子变成强调句。,高中英语选修六 Unit B,19,

9、4. I didnt hear from her until last summer. 5. Why does everyone think I am narrow-minded?,It was not until last summer that I heard from her.,Why is it that everyone thinks I am narrow-minded?,高中英语选修六 Unit B,20,口诀： 代词 it 本意它, 既可指这又指那; 时间天气均可指, 谈到距离也用它; 假主假宾均可作, 强调句型跟that。,it在句子中可以作如此多的成分,那么我们如何区分it

10、在句中的不同成分呢?,高中英语选修六 Unit B,21,1. It is two years _ I joined the army. A. before B. since C. that D. after 2. It was two years _ I joined the army. A. before B. since C. that D. after,Practice,高中英语选修六 Unit B,22,3. It was not until 1920 _ regular radio broadcast began. A. while B. which C. that D. sinc

11、e 4. _ is a fact that English is being accepted as an international language. A. There B. This C. That D. It,高中英语选修六 Unit B,23,5. It was about 600 years ago _ the first clock with a face and an hour hand was made. A. that B. until C. before D. when 6. I hate _ when people talk with their mouths full

12、. A. it B. that C. these D. them,高中英语选修六 Unit B,24,7. The Parkers bought a new house but _ will need a lot of work before they can move in. A. they B. it C. one D. which 8. _ no need for us to discuss the problem again since it has already been settled. A. It has B. There has C. It is D. There is,高中

13、英语选修六 Unit B,25,9. _ was in 1979 _ I graduated from the university. A. That; that B. It; that C. That; when D. It; when 10. What a pity my new computer doesnt work! _ must be something wrong with it. A. It B. There C. This D. That,高中英语选修六 Unit B,26,11. I like _ in the autumn when the weather is clea

14、r and bright. A. this B. that C. it D. one 12. Someone is knocking at the door, but who can _ be? A. one B. he C. she D. it,高中英语选修六 Unit B,27,13. A knock on the door made him look up. But _ was only the manager. A. this B. that C. she D. it 14. Someone is ringing the doorbell. Go and see _ . A. who

15、is he B. who he is C. who is it D. who it is,高中英语选修六 Unit B,28,15. Is _ necessary to complete the design before National Day? A. this B. that C. it D. he 16. Does _ matter if he cant finish the job on time? A. this B. that C. he D. it,高中英语选修六 Unit B,29,17. _ worried her a bit that her hair was turni

16、ng grey. A. That B. It C. What D. This 18. They have made _ a rule _in the room. A. this; not to smoke B. it; smoking C. it; to not smoke D. it; not to smoke,高中英语选修六 Unit B,30,It was because of bad weather_ the football match had to be put off. (2003 上海春) A. so B. so that C. why D. that,高考链接,高中英语选修六

17、 Unit B,31,2. It was with great joy _ he received the news that his lost daughter had been found. （2004 福建） A. because B. which C. since D. that,高中英语选修六 Unit B,32,3. It was after the invention of printing _ to publish large numbers of books and pictures. （2005上海春） A. were people able B. that people

18、were able C. when were people able D. people were able,高中英语选修六 Unit B,33,4. It was after he got what he had desired _ he realized it was not so important. （2006 辽宁） A. that B. when C. since D. as,高中英语选修六 Unit B,34,5. It is imagination _ makes the world colorful, full of vigor and vitality. (2007 上海春

19、) A. where B. what C. that D. when,高中英语选修六 Unit B,35,6. It is not who is right but what is right _ is of importance. (2007 重庆卷) A. which B. it C. that D. this,高中英语选修六 Unit B,36,1. Its difficult to remember all their names. 2. Its very quiet in the caf. 3. It rained for three days. 4. He made it clear that he didnt want to speak to me. 5. It was nice to meet you.,形式主语, 代替,Circumstance,Weather,形式主语, 代替,Discuss the fol