Unit3Grammar同步教学课件新人教版选修6.ppt

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第四学时 Grammar ;it的用法(Ⅰ) 1.人称代词it:主要指刚提到的事物,以避免重复。在某些交际用语中,it用以确定一个人的身份。 They watched the train until it disappeared in the distance.(it指代 the train) 他们看着火车,直到它消失在远方。 Her babys due next month.She hopes it will be a boy.(it指婴儿,尤指性别不详时) 她的孩子下个月将出世了,她希望是个男孩。 “Who was that at the door?” “It was a man selling house insurance.” (it 指代a man selling house insurance) 门口的那个人是谁?销售住房保险的。;2.非人称代词it:it有时不指具体的东西,而泛指天气、时间、环境、距离等。 Its over 200 miles from London to Manchester. 从伦敦到曼彻斯特有200多英里。 Its getting competitive in the car industry. 汽车工业方面的竞争日益加剧。 If its convenient,I can see you tomorrow. 要是方便的话,我明天可以见你。 3.先行代词it:it 可以指代较长的主语放在句首。 (1)it代表不定式充当形式主语。 In fact it is a hard job for the police to keep order in an important football match. 事实上警察在重大比赛中维持好秩序是很难的一项工作。;(2)it代表动名词充当形式主语。 It is no use crying over spilt milk. (谚语) 覆水难收。 Its been a lot of fun meeting you. 见到你真是太高兴了。 (3)it代表that或wh-词引导的主语从句。 Has it been decided when we are to hold the sports meeting? 我们什么时候举行运动会决定了吗? It is very important that he should go to the school of Art. 他应该上艺术学校是非常重要的。;It is a mystery to me how it all happened. 这一切是如何发生的对我来说是个谜。 (4)it代表不定式充当形式宾语。 Many people now make it a rule to buy cards for their friends before Christmas. 现在许多人已形成习惯在圣诞节前为朋友购买贺卡。 (5)it代表动名词充当形式宾语。 I think it a waste of time talking to him. 我认为与他谈话是浪费时间。 ;一、单项填空 1.(2012年安徽卷) A lot of language learning,________ has been discovered, is happening in the first year of life, so parents should talk much to their children during that period. A.as B.it C.which D.this 2.It is none of your business ________ other people think highly of him. A.how B.whether C.which D.when ;3.—He got his first book published.It turned out to be a best seller. —When was ________? —______ was in 2000 when he was still in college. A.that;This  B.this;It  C.it;This  D.that;It 4.He didnt make __________ clear when and where the meeting would be held. A.this B.that C.it D.these 3.解析:that指代前文他的第一本书成为

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