1、The use of“it”(2)The use of“it”(2)Unit 4 GrammarUnit 4 Grammar在上一单元我们已经讲解了在上一单元我们已经讲解了it在句中可以用作许多成分在句中可以用作许多成分,在本单元我们用图表的形式在本单元我们用图表的形式进行复习整理使同学们对进行复习整理使同学们对it的的用法用法有系统的掌握有系统的掌握。以上是我们用图表的形式对以上是我们用图表的形式对it的用法进行的归纳，相信的用法进行的归纳，相信同学们已经对同学们已经对it的用法有了的用法有了更清晰的认识。更清晰的认识。接下来我们对接下来我们对it在强调句中在强调句中的用法做一小结。的用法做
2、一小结。ObjectiveTo learn the use of the emphatic“it”.语法讲解建议采用归纳法，如尽语法讲解建议采用归纳法，如尽可能多的呈现一些相关例句，或可能多的呈现一些相关例句，或可让学生从已学课文中找相应例可让学生从已学课文中找相应例句，引导学生试着从所观察到的句，引导学生试着从所观察到的语言现象中总结出语言规则和语语言现象中总结出语言规则和语法规律。法规律。Look at these sentences in the book.and that it is human activity that has caused this global warming
3、rather than a random but natural phenomenon.It was a scientist called Charles Keeling,who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.All scientists accept this data.They also agree that it is the burning of more and more fossil fuels that has resul
4、ted in this increase in carbon dioxide.Pay attention to the word“it”.“It”is used for emphasis.强调句型中强调句型中,为了强调句子的某一成分为了强调句子的某一成分(通常是主语、宾语或状语通常是主语、宾语或状语),常用结构常用结构:It is/was+被强调部分被强调部分+that(who)原句原句:I met Tom in the street yesterday.It was I who(that)met Tom in the street yesterday.It was Tom that I me
5、t in the street yesterday.It was in the street that I met Tom yesterday.It was yesterday that I met Tom in the street.主语主语宾语宾语时间状语时间状语地点状语地点状语 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
6、 all this happened.根据划线部分把下列句子变成强调句。根据划线部分把下列句子变成强调句。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?1.It was not until 1920 _ regular radio broadcast began.A.w
7、hile B.which C.that D.since2._ is a fact that English is being accepted as an international language.A.There B.This C.That D.It3.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.when4.I hate _ when people talk with their mouths full.A.it B.
8、that C.these D.them 5.I like _ in the autumn when the weather is clear and bright.A.this B.that C.it D.one6.Someone is knocking at the door,but who can _ be?A.one B.he C.she D.it7.Is _ necessary to complete the design before National Day?A.this B.that C.it D.he8.Does _ matter if he cant finish the j
9、ob on time?A.this B.that C.he D.it9._ worried her a bit that her hair was turning grey.A.That B.It C.What D.This10.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 smokeReviewit的用法：代词的用法：代词it；引导词；引导词it。口诀：口诀：代词代词 it 本意它本意它,既可指这又指那既可指这又指那;时间天气均可指时间天
10、气均可指,谈到距离也用它谈到距离也用它;假主假宾均可作假主假宾均可作,强调句型跟强调句型跟that。我们如何区分我们如何区分it在句中的不同成分呢在句中的不同成分呢?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.形式主语形式主语,代替代替CircumstanceWeather形式宾语形式宾
11、语,代替代替Quiz II:Discuss the following sentences and tell the function of“it”.形式主语形式主语,代替代替6.It was on Tuesday that Smith came.7.Its three miles from here to the nearest garage.8.A tall man stood up and shook hands.It was captain Jim.9.I hear you bought a new bike.Can you show it to me?用于强调句型中用于强调句型中Di
12、stance人称代词，代表前面提到的人人称代词，代表前面提到的人人称代词，代表前面提到的物人称代词，代表前面提到的物10.It was five oclock when we got back home yesterday.11.It was dirty and wet below the ship where the slaves were kept.12.It was on this coast that lots of his people disappeared.13.It was most likely that one third of them had lost their li
13、ves.Time Circumstance用于强调句型用于强调句型作引导词，在句中作形式主语，作引导词，在句中作形式主语，代替后面的从句代替后面的从句1.写这本书的人就是写这本书的人就是玛丽玛丽。It is Mary who wrote this book.2.这个就是长满了美丽鲜花的这个就是长满了美丽鲜花的花园花园。It is the garden that many beautiful flowers grow in.Quiz III:Translation 3.她就是擅长唱歌的她就是擅长唱歌的女孩女孩。It is the girl who is good at singing.4.那就是他叔叔移居纽约的那就是他叔叔移居纽约的原因原因。It was for this reason that his uncle moved to New York.5.错的人是错的人是我我。It is I who am wrong.
