高中强调结构最强解析

1、GrammarHuman activity has caused this global warming.It is human activity that has caused this global warming.It is this global warming that human activity has caused.Answer key for Exercise 1:1. It was a scientist called Charles Keeling who made accurate measurements of the amount of carbon dioxide

2、 in the atmosphere from 1957 to 1997.2. (They also believe) it is the burning of more and more fossil fuels that is resulting in this increase in carbon dioxide.Explanation 由由it引导的强调句结构引导的强调句结构： It 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 注意：注意：此结构强调的成分仅限于此结构强调的成分仅限于主主语，宾语和状语语，宾语和状语(从句从句)。 My f

3、ather did the experiment in the lab yesterday evening1: It was my father that did the experiment in the lab yesterday evening2: Who was it that did the experiment in the lab yesterday evening.3: Can you tell me who it was that did the experiment in the lab yesterday evening. 强调宾语强调宾语：It was the expe

4、riment that my father did in the lab yesterday evening 强调时间强调时间：It was yesterday evening that my father did the experiment in the lab 强调地点强调地点：It was in the lab that my father did the experiment yesterday eveningI was reading in the library when the bell rang last night.4: It was when the bell rang

5、last night that I was reading in the library .I didnt know the truth until he told me. 5: It was not until he told me that I knew the truth.It was on Oct.1st 1949 _ the PRC was founded.It was Oct.1st 1949_the PRC was founded.6: 区别与定语从句：区别与定语从句：thatwhen 典型例题分析：典型例题分析： 1) It was last night _ I saw the

6、 film Star Wars Awho Bwhen Cthat Dwhich 答案答案C 强调句的结构是：强调句的结构是：It + be + 强调部分强调部分 + that (who) +主谓句。强主谓句。强调句的连词只有两个，调句的连词只有两个，that和和who。当强调的部分是人，且为句子的主当强调的部分是人，且为句子的主语时，才用语时，才用who，其余用，其余用that。2) It is ten years _ Miss Green returned to Canada Athat Bwhen Csince Das 答案答案 C考点是连词用法。本题易考点是连词用法。本题易误选为误选为A

7、 其实本句不是强调句。其实本句不是强调句。 若是去掉若是去掉It bethat还应是一个完整还应是一个完整的句子。而本句去掉的句子。而本句去掉It isthat, 只剩下只剩下ten years Miss Green returned to Canada 不成句。因此本不成句。因此本句不是强调句。句不是强调句。It is + 时间时间+since.，其中其中 is = has been.1. It was this village _ I was bought up. A. where B. that C. on which D. which练习练习:2. It was in this vil

8、lage _ I was bought up. A. where B. that C. on which D. which3. - Was it under the tree _ you were away talking to a friend? - Sure. But when I got back there, the bike was gone. A. that B. where C. which D. while Answer key for Exercise 2:1. It is greenhouse gases that have warmed the earth by trap

9、ping heat energy in the atmosphere.2. It is the greenhouse effect that gives the earths surface the average temperature of 15 C.3. It is fossil fuels that much of the energy used to light and heat our homes comes from.4. It is the United Sates of America that is the biggest producer of greenhouse ga

10、ses.5. It is for centuries that carbon dioxide stays in the atmosphere while other greenhouse gases stay in the atmosphere only for a day or less.6. It is their very existence that low-lying countries feel is in danger from rising sea levels.7. It is human activities that many scientists believe hav

11、e caused the earths temperature to rise. 8. It is future climate changes and their effects on our environment that scientists want to find out about.9. It is by several metres that the level of the sea could rise in the years ahead because of global warming.10. It is outer space that might provide u

12、s with new energy sources in the future. Give a full answer to each question about Millennium Kids using the form it is/was. that . USING STRUCTURES (P64)1. When was the first childrens conference on the environment organized in Australia? It was in 1996 that the first childrens conference on the en

13、vironment was organized in Australia. 2. Who runs Millennium Kids? It is children that / who run Millennium Kids.3. Where can you find out more about Millennium Kids? It is on the Internet that you can find out more about Millennium Kids.4. Where do the young people decide which projects they want t

14、o concentrate on? It is at the yearly conference that the young people decide which projects they want to concentrate on.5. What is Millennium Kids asking you to reduce, reuse and recycle at the moment? It is plastic bags that Millennium Kids is asking you to reduce, reuse and recycle at the moment.Answer key for Exercise 2:1. Indeed, it was four Australian children who started it in 1996 when they organized the first childrens environmental conference.2. It is at this conference t