Learningaboutlanguage选修五.ppt

Unit 4 Global warmingLearning about language高二人教新课标版选修六高二人教新课标版选修六Discovering useful words and expressions1 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. Possible meaningsWordWhich used1. n. a general tendency in the way a situation is changing2. v. to start doing something that everyone copies trend 1Possible meaningsWordWhich used1. v. to make something (especially something bad) increase 2. n. a substance that can be burned to make heat or energy fuel2Possible meaningsWordWhich used1. n. the physical or mental condition of someone2. v. to formally say or write some information or an opinion1. v. to use time, energy, goods, etc 2. n. (formal) to eat or drink something state2 consume1Possible meaningsWordWhich used1. v. to look quickly at someone or something2. v. to read something very quickly glance21. 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.datakept on2 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 _.quantitiesrun outbuild upcatastrophe4. Many scientists believe that global warming has _ through the burning of fossil fuels. 5. The _ of a rising sea level would be widespread e aboutconsequence6. 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.phenomenongraphper9. 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 inGrammarIt的用法及强调句型的用法及强调句型n由由it引导的强调句结构引导的强调句结构：nIt is (was)+被强调部分被强调部分+that (who) + 句子其他部分句子其他部分n注意注意: 此结构强调的成分仅限于主语此结构强调的成分仅限于主语, 宾语和状语。宾语和状语。如：如：n 原句原句: My father did the experiment in the lab yesterday eveningn 强调主语强调主语: It was my father who/that did the experiment in the lab yesterday eveningn强调宾语强调宾语: It was the experiment that my father did in the lab yesterday eveningn强调时间强调时间: It was yesterday evening that my father did the experiment in the labn强调地点强调地点: It was in the lab that my father did the experiment yesterday eveninge.g. It was in that city that we met for the first time It was not until he told me that I knew the truth1. 强调句的一般疑问句句型：强调句的一般疑问句句型： Is / Was +it +所强调的部分所强调的部分+that / who/ whom +其余部分其余部分? Was it Tom that /who I saw yesterday here？ Was it at eight oclock that you began to work?注意：注意：2. 强调句的特殊疑问句句型：强调句的特殊疑问句句型： 疑问词疑问词 +所强调的部分所强调的部分+that / who + 其余部分其余部分? Where was it that you picked up the wallet? Why was it that he couldnt answer the question?3. 名词性从句名词性从句(宾语宾语/表语从句表语从句)强调句的强调句的 基本结构基本结构: 疑问词疑问词(强调部分强调部分)+ it is that + 其它成分其它成分? 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. 判断是否是强调句判断是否是强调句, 可把可把 It is / was that 去掉去掉, 剩余部分如果是一个完整的剩余部分如果是一个完整的句子句子, 就是强调句。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. (强调句强调句)2) It was 1945 when World War II ended.(定语从句定语从句)3) It was a long time since I met you last. (时间状语从句时间状语从句)5. 若原句是若原句是notuntil句型句型, 在强调在强调until 部部分时分时, 要把否定形式放入被强调部分。如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.n典型例题分析：典型例题分析： 1) It was last night _ I saw the film Star Wars A. who B. when C. that D. whichn答案答案C 强调句的结构是强调句的结构是: It + be + 强调强调部分部分 + that (who) +主谓句。强调句的连词主谓句。强调句的连词只有两个只有两个, that和和who。当强调的部分是人。当强调的部分是人, 且为句子的主语时且为句子的主语时, 才用才用who, 其余用其余用that。2) It is ten years _ Miss Green returned to Canada A. that B. when C. since D. as答案答案C 考点是连词用法。本题易误选为考点是连词用法。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。而本句去掉还应是一个完整的句子。而本句去掉It isthat, 只剩下只剩下ten years Miss Green returned to Canada 不成句。因此本句不是强调句。不成句。因此本句不是强调句。It is + 时间时间+since., 其中其中 is = has been.1. It wasnt until nearly a month later _ I received the managers reply. (2005NMET) Asince Bwhen C. as D. that 2. It was not until 1920 _ regular radio broadcasts began. (NMET1995) A. while B. which C. that D. sinceDC高考链接高考链接3. It was about 600 years ago _ the first clock with a face and an hour hand was made. (1997NMET) A. that B. until C. before D. when4. It was only when I reread his poems recently _ I began to appreciate their beauty. (1998NMET) A. until B. that C. then D. soAB5. It is these poisonous products _ can cause the symptoms of the flu, such as headache and aching muscles. (2003上海上海) A. who B. that C. how D. what6. Why! I have nothing to confess. _ you want me to say? (2004上海上海) A. What is it that B. What it is that C. How is it that D. How it is thatBA7. It was _ back home after the experiment. (2004湖北湖北) 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 go8. It was with great joy _ he received the news that his lost daughter had been found. (2004福建福建) A. because B. which C. since D. thatCD1. It was this village _ I was bought. A. where B. that C. on which D. which练习练习 IA 2. It was in this village _ I was brought up. A. where B. that C. on which D. whichB 3. - Was it under the tree _ you were always talking to a friend? - Sure. But when I got back there, the bike was gone. A. that B. where C. which D. whileC 4. Can it be in the drawer _ you put your passport? A. where B. in which C. there D. that5. It was July 1, 1997 _ saw the return of Hong Kong to the motherland. A. that B. when C. which D. in whichDA6. It is two years _ I joined the army. A. before B. since C. that D. after7. It was two years _ I joined the army. A. before B. since C. that D. afterBA8. It was not until 1920 _ regular radio broadcast began. A. while B. which C. that D. since9. _ is the fact that English is being accepted as an international language. A. There B. This C. That D. ItCD10. It was about 600 years ago _ first clock with a face and an hour hand was made. A. that B. until C. before D. when11. I hate _ when people talk with their mouths full. A. it B. that C. these D. them AA12. Toms mother kept telling him that he should work harder, but _ didnt help. A. he B. which C. she D. it13. Was _ in 1998 _ your teacher graduated from university? A. that., that B. it. which C. it. that D. it. whenDC14. He felt _ duty to work for human rights and progress. A. it his B. his C. that is a D. that is his15. _ is no good _ without doing anything. A. This. talking B. It. to speak C. That. to say D. It. talkingADII. 根据句意及所给单词的首字母或汉语根据句意及所给单词的首字母或汉语 提示提示, 写出各单词的正确形式。写出各单词的正确形式。1. 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 _ (外部的外部的) space.outerxistenceverage idespreadIII. 每空填一词每空填一词, 使该句与所给句子的使该句与所给句子的 意思相同。意思相同。1. 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 isthatIt wasthat3. 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 untilthatIt wasthat / who5. 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 of the city and settled down in a small village for this reason._ _ for this reason _ her uncle moved out of the city and settled down in a small village.It was thatIt wasthat7. What on earth do you want me to say?_ _ _ _ you want me to say?8. I didnt receive the managers reply until nearly a month later._ _ _ _ nearly a month later _ I received the managers reply.What is it that It was not untilthat 9. Marx met Tracy in Pairs in 1845._ _ in Pairs _ Marx met Tracyin 1845.10. The football match had to be called off because it rained heavily._ _ because it rained heavily _ the football match had to be called off.thatIt wasthatIt wasIV. 翻译翻译1. 总的来说总的来说, 我很喜欢这本书。我很喜欢这本书。 (on the whole)2. 昨天的平均温度是昨天的平均温度是28摄氏度。摄氏度。(average)On the whole, I like this book very much.The average temperature yesterdaywas 28C.Make four sentences with “it” for emphasis.Homework