Unit4Globalwarminggrammar强调句课件-高中英语人教新课标选修六

1、演讲人：当图网UNIT 4 GrammarGlobal warmingPrepared by Abdushkur 强调句Emphatic sentence强调句的作用强调句就是为了强调句子中的某个成分的句型。 It + is/was + that/who + “It” has no meaning.When the preson is emphasized, who(m)/that can be used. (一)强调句型Original sentence：I recite model essay everyday.我每天背诵范文It is I who/that recite model es

2、say everyday（强调主语）是我每天背诵范文It is model essay that I recite every day （强调宾语）我每天背诵的是范文It is everyday that I recite model essay .（强调时间状语） 1.关系词的运用在it is/ was.that/who 强调句中，只有当强调的主语或宾语是人时，关系词既可以用that 也可以用whoIt was I that/who saw a film in the Youth Cinema last night.我昨天晚上在青年影院看了一场电影。(I作主语）It was Ahmat th

3、at/ who I met at Kashgar Airport我在喀什机场遇到的是艾合麦提(Ahmat作宾语）It was your attitude ，rather than your ability ，that determines your success.是你的态度而不是你的能力决定了你的成功。（your attitude作主语） 当被强调的部分是状语、表语或宾语补足语时，关系词只能用that，不能 用when,where或why等。It was because you gave me so much help that I made great progress. 正是因为你给予了

4、我那么多帮助，我才取得了很大的进步。(强调原因状语)It was a teacher that he became at the age of 24.他在24 岁时成为一名教师。(强调表语）It was monitor that we made Elyar yesterday.昨天，我们推选艾力亚尔当班长。(强调宾语补足语) 2.时态的运用强调句中的时态要依据原句的时态而定，即原句为过去的某种时态，则强调句中就用it was; 原句为现在的某种时态，强调句中就用it is。还可用“might be / must have been/cant bethat. It is Mdina who lo

5、ves basketball most. 最喜爱篮球的人麦迪娜。(is 与loves 时态保持一致）It was because I overslept that I came late the class.我是因为睡过头才上课迟到的。(was与 came 时态保持一致）It must have been Bill who phoned yesterday.昨天准是比尔打的电话。 It is Mdina who loves basketball most. 最喜爱篮球的人麦迪娜。(is 与loves 时态保持一致）It was because I overslept that I came l

6、ate the class.我是因为睡过头才上课迟到的。(was与 came 时态保持一致）It must have been Bill who phoned yesterday.昨天准是比尔打的电话。 It is Mdina who loves basketball most. 最喜爱篮球的人麦迪娜。(is 与loves 时态保持一致）It was because I overslept that I came late the class.我是因为睡过头才上课迟到的。(was与 came 时态保持一致）It must have been Bill who phoned yesterday.

7、昨天准是比尔打的电话。 Discovering useful structures 1.Compare the two sentences below. Human activity has caused this global warming.2. It is human activity that has caused this global warming.The meaning are the same in the two sentences. “It” has been used in the second sentence to give extra importance to

8、“human activity”.1. It was a scientist called Charles Keeling, who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.2. it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide.In the article there are Two more

9、sentences in which “it” is used for emphasis in the article. 2.Rewrite each sentence with It is that /who to give more emphasis to the underlined part. (Page 29)It is scientists who warned that greenhouse gases would warm the earth by trapping heat energy in the atmosphere.It is the greenhouse effec

10、t that gives the earths surface the average temperature of 15C.It is fossil fuels that much of the energy used to light and heat our homes comes from.It is the developed countries that consume the most energy in the world.It is for centuries that carbon dioxide has the tendency to stay in the atmosp

11、here while other greenhouse gases 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 environment that scientists want to find out about .It is by