it做形式主语及形式宾语.doc

简单学习网课程讲义开篇语it代替前面（或后面）的单数名词或分句等所表示的事物。You cannot eat your cake but have it.（it代替前面的cake）Although we cannot see it, there is air all around us. （it代替后面的air）They say he has left town, but I dont believe it. （it代替前面Theytown分句中的情况）题一：The employment rate has continued to rise in big cities thanks to the efforts of the local governments to increase _.A. them B. those C. it D. that题二：If you dont know the new word, why dont you_ in the dictionary?A. look it at B. look up it C. look after it D. look it up题三：I hate_ when people talk with their mouths full.A. it B. that C. these D. themit代替有生命但不能或不必分性别的东西（包括婴儿）。Yesterday we saw a big tree. It was fully twenty meters high. （it代替前面的tree）The baby cried because it was hungry. （it代替前面的baby）题四：Hi, Jack! Im going to Hungary for my holidayHungary? A splendid country, _ well worth visitingA. it B. one C. which D. that题五：The baby sat on _ mothers knees, learning to sing.A. its B. it C. / D. its 在某些习惯说法中，可以代替人。- Someone is knocking at the door, Peter.- Who is it?- Its me.- Who are singing?- It is the children.- The light is still on in the lab. - It must be the third-year students doing the experiment.题六：Who is there? _ Helen. A. Shes B. Thats C. Its D. Theres题七：Someone is ringing the door. Go and see_.A. who is he B. who are C. who was it D. who it is作无人称代词it作无人称代词时，除了句中找不到它所代表的词语外，另一个特点是它后面的内容都是表示天气、时间、距离、度量及情况等。it指代时间It is four years since I wasnt a sale manager.我不做销售经理有4年了。it指代距离Its a long way from Beijing to Washington.从北京到华盛顿很远。it指代天气It is said to be cloudy tomorrow.据说明天多云。it指代价值How much is the coat? Its ninety dollars.这件衣服多少钱？九十美元。题八：It is nearly half a century_ the first computer was invented.A. since B. when C. that D. until题九：_is five kilometers from his home to our school.A. It B. This C. That D. There代替指示代词，起着this或that的作用。Is this your car? No, it isnt. 这是你的汽车吗？不是。Whats that? Its a video. 那是什么？它是一台录像机。Whose room is this?It is theirs.这是谁的房间？是他们的。it作形式主语It作形式主语代替不定式短语It is up to you to decide. 这事要由你决定。It makes me happy to hear you have recovered.听说你恢复了健康，这使我很高兴。代替动名词短语Its no good smoking. 吸烟没有好处。Its worthwhile working the whole night on the problem.用整夜的时间来研究那个问题是值得的。代替主语从句It doesnt matter what you do. 你干什么都没有关系。It seems that everyone has known the news.好像大家都知道这个消息。题一：_ was a pity not to have gone to Shanghai.A. This B. There C. Which D. It题二：Its no good _ todays work till tomorrow.A. puting off B. put off C. putting off D. to be put off题三：_no need for us to discuss the problem again since it has already been settled.A. It has B. There has C. It is D. There isit作形式宾语代替不定式短语I consider it better to be early.我认为能够早一些更好。We found it impossible to get there before July .我们觉得，要在七月以前到达那里是不可能的。代替动名词短语We thought it no use doing that.我们认为做那事没有用。代替宾语从句The teacher makes it clear that everyone should hand in his homework on time .老师清楚地指出，每个人都应该按时交作业。题一：The two girls are so alike that strangers find_ difficult to tell one from the other.A. it B. them C. her D. that题二：We feel_ our duty to make our country a better place.A. it B. this C. that D. one题三：We took _for granted that he would follow us.A.