人教新课标选修六Unit4Learningaboutlanguage.ppt

Unit 4 Global warming Learning about language,Discovering useful words and expressions,1 Find the words in the text that have these two meanings. Take notice of the meaning used in the reading passage, write the words and mark their usage in the chart.,trend,1,fuel,2,state,2,consume,1,glance,2,1. Charles Keeling collected _on the carbon dioxide content in the atmosphere over a forty-year period. He found that the amount of carbon dioxide _ increasing during that time.,data,kept on,2 Complete each sentence with one of new words or phrases.,2. Although we are burning coal in huge _ every year, we wont _ of it for centuries. 3. If the amount of greenhouse gases continues to _, we could be facing a global _.,quantities,run out,build up,catastrophe,4. Many scientists believe that global warming has _ through the burning of fossil fuels. 5. The _ of a rising sea level would be widespread flooding.,come about,consequence,6. On the whole the warming of the earth is a _ that causes great concern. 7. The _ shows temperature changes during the 20th century. 8. One hectare of forest can absorb 23 tons of carbon dioxide _ year.,phenomenon,graph,per,9. The washing machine uses too much energy, but _ we buy a more economical one, it would still use too much water. 10. The car accident on the main road yesterday _ one drivers death.,even if,resulted in,Grammar,It的用法及强调句型,由it引导的强调句结构： It is (was)+被强调部分+that (who) + 句子其他部分 注意: 此结构强调的成分仅限于主语, 宾语和状语。,如： 原句: My father did the experiment in the lab yesterday evening 强调主语: It was my father who/that did the experiment in the lab yesterday evening,强调宾语: It was the experiment that my father did in the lab yesterday evening 强调时间: It was yesterday evening that my father did the experiment in the lab,强调地点: It was in the lab that my father did the experiment yesterday evening e.g. It was in that city that we met for the first time It was not until he told me that I knew the truth,1. 强调句的一般疑问句句型： Is/Was +it +所强调的部分+that/ who/whom +其余部分? Was it Tom that/who I saw yesterday here? Was it at eight oclock that you began to work?,注意：,2. 强调句的特殊疑问句句型： 疑问词 +所强调的部分+that/who + 其余部分? Where was it that you picked up the wallet? Why was it that he couldnt answer the question?,3. 名词性从句(宾语/表语从句)强调句的 基本结构: 疑问词(强调部分)+ it is that + 其它成分? I just wonder what it is that makes him excited. He is unwilling to tell me who makes him angry. He is unwilling to tell me who it is that made him angry.,4. 判断是否是强调句, 可把 It is / was that 去掉, 剩余部分如果是一个完整的 句子, 就是强调句。 It was in the street that I met her father. In the street I met her father. It was because she was ill that they didnt ask her to do the job. Because she was ill, they didnt ask her to do the job.,1) It was in 1945 that World War II ended. (强调句) 2) It was 1945 when World War II ended. (定语从句) 3) It was a long time since I met you last. (时间状语从句),5. 若原句是notuntil句型, 在强调until 部分时, 要把否定形式放入被强调部分。如: He didnt leave until l returned. = It was not until I returned that he left.,I didnt realize she was a famous film star until she took off her dark glasses. Not until she took off her dark glasses did I realize she was a famous film star. It was not until she took off her dark glasses that I realized she was a famous film star.,典型例题分析： 1) It was last night _ I saw the film Star Wars A. who B. when C. that D. which,答案C 强调句的结构是: It + be + 强调 部分 + that (who) +主谓句。强调句的连词 只有两个, that和who。当强调的部分是人, 且为句子的主语时, 才用who, 其余用that。,2) It is ten years _ Miss Green returned to Canada. A. that B. when C. since D. as 答案C 考点是连词用法。本题易误选为A 其实本句不是强调句。若是去掉It bethat 还应是一个完整的句子。而本句去掉It is that, 只剩下ten years Miss Green returned to Canada 不成句。因此本句不是强调句。 It is + 时间+since., 其中 is = has been.,1. It wasnt until nearly a month later _ I received the managers reply. (2005 NMET) Asince Bwhen C. as D. that 2. It was not until 1920 _ regular radio broadcasts began. (NMET1995) A. while B. which C. that D. since,D,C,高考链接,3. It was about 600 years ago _ the first clock with a face and an hour hand was made. (1997 NMET) A. that B. until C. before D. when 4. It was only when I reread his poems recently _ I began to appreciate their beauty. (1998 NMET) A. until B. that C. then D. so,A,B,5. It is these poisonous products _ can cause the symptoms of the flu, such as headache and aching muscles. (2003上海) A. who B. that C. how D. what 6. Why! I have nothing to confess. _ you want me to say? (2004上海) A. What is it that B. What it is that C. How is it that D. How it is that,B,A,7. It was _ back home after the experiment. (2004湖北) A. not until midnight did he go B. until midnight that he didnt go C. not until midnight that he went D. until midnight when he didnt go 8. 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,C,D,1. It was this village _ I was brought up. A. where B. that C. on which D. which,练习 I,A,2. It was in this village _ I was brought up. A. where B. that C. on which D. which,B,3. - Was it under the tree _ you were talking to a friend? - Sure. But when I got back there, the bike was gone. A. that B. where C. which D. while,D,4. Can it be in the drawer _ you put your passport? A. where B. in which C. there D. that 5. It was July 1, 1997 _ saw the return of Hong Kong to the motherland. A. that B. when C. which D. in which,D,A,6. It is two years _ I joined the army. A. before B. since C. that D. after 7. It was two years _ I joined the army. A. before B. since C. that D. after,B,A,8. It was not until 1920 _ regular radio broadcast began. A. while B. which C. that D. since 9. _ is the fact that English is being accepted as an international language. A. There B. This C. That D. It,C,D,10. It was about 600 years ago _ first clock with a face and an hour hand was made. A. that B. until C. before D. when 11. I hate _ when people talk with their mouths full. A. it B. that C. these D. them,A,A,12. Toms mother kept telling him that he should work harder, but _ didnt help. A. he B. which C. she D. it 13. Was _ in 1998 _ your teacher graduated from university? A. that, that B. it. which C. it. that D. it. when,D,C,14. He felt _ duty to work for human rights and progress. A. it his B. his C. that is a D. that is his 15. _ is no good _ without doing anything. A. This. talking B. It. to speak C. That. to say D. It. talking,A,D,II. 根据句意及所给单词的首字母或汉语 提示, 写出各单词的正确形式。 The organization has been in e_ for 25 years. 2. What is the a_ rainfall for August in your country? 3. The earthquake caused a w_ damage to the area. 4. With the development of technology, people are more and more familiar with _ (外部的) space.,outer,xistence,verage,idespread,III. 每空填一词, 使该句与所给句子的 意思相同。 We depend on energy to do many things. _ _ energy _ we depend on to do many things. 2. He didnt go to school because he was ill. _ _ because he was ill _ he didnt go to school.,It is,that,It was,that,3. My father didnt return until 11 oclock last night. _ _ _ _ 11 oclock _ my father returned last night. 4. David bought a walkman from a store yesterday. _ _ David _ bought a walkman from a store yesterday.,It was not until,that,It was,that / who,5. The mountain climber was rescued with the help of the local people. _ _ with the help of the local people _ the mountain climber was rescued. 6. Her uncle moved out