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1、重点代词it的用法和练习(含答案)(1)it用做人称代词的用法it用作代词，意为“它”，既可以指人，也可以指物。 it做人称代词，可以用来代替一个名词、 短语、从句或句子，以避免他们在句中的重复。这是可以指提到过的，也可以指未提到的，在句中做 主语、表语和宾语。1)指事物，it可以知道除人以外的任何事物或动物。I dropped my watch and it broke.我把手表掉在地上摔坏了。2)指人，it主用用于指性别不明的婴儿或只听其声不见其人的人，如：Is it a boy or a girl是男孩还是女孩There is a knock on the door. It must b
2、e the postman.“Listen. Someone is crying.”“Oh, it must be Mary.”3)代替某些代词。代词it可以用于代替指示代词this, that以及复合不定代词something, anything, nothing等，如： “What s this”“It s a new machine”(2)it用作非人称代词的用法1)it用作非人称代词主要用来指时间、距离、价值、天气、气温及温度等自然现象。如It s too late to go there now.现在去那已经太迟了。It rained all day yesterday.昨天下了整天
3、雨。2)用于某些句型。It s time for sth.该做某事了。It s to do sth.是时候该做某事了。It s time for sb to do sth.某人该干某事了。It s (about/high) time +that-从句。某人该做某事了。(从句谓语用过去式，有时候用 should+ 动词原形)It s first(second)time +that-从句。某人第几次干某事。(从句谓语动词用现在完成时)It s +时间段+since从句。自从以来有一段时间了。It s +时间段+before从句。过多长时间才(3)it用作形式主语的用法。1)当不定式、动名词、从句等
4、复杂成分做句子主语时，为保持句子的平衡，通常把真正的主语放在旬末，而句首使用形式主语it。如It s very important to remember this.It s hard work climbing mountains.It s unknown when he will come.2)it用作形式主语的重要句型。It+be+adj.+for(of)sb to do sth.某人做某事It is hard for him to make up his mind.他彳艮难下定决心。It was foolish of her to say such a thing.她说那样的话，太愚蠢
5、了。提示：此句型中的介词of和for的区别是：of用于指某人的性格，属性，特征等。介词for表示对象，意为“对一来说”。It takes/took sb+时间段+to do sth.某人做某事花了时间。It took me two hours to finish my homework.It is up to sb to do sth.该由某人做某事了。It s up to you to make the choice.该由你来做选择了。It 100ks(seems,appears,happens,occurs)that (as if)似乎It seems as though he didn
6、t recognize me.(4)it 用作形式宾语的用法。1)当不定式、动名词、从句等复杂成分用作宾语且后面跟有宾语补足语时，通常会在宾语补足语前使用it作形式宾语，而将真正的宾语移至旬末。其基本结构为“动词+it+宾语补足语+不定式(动 名词或从句)”I find it difficu1t to do the job we11.I think it best that you shou1d stay here.We think it no use comp1aining.2)用作形式宾语的几个特殊结构：动词+it+that-从旬I think it (that) he wi11 come
7、 on time.动词+it+when(if)-从旬We ra11y appreciate it when she offered to he1p.动词+prep.+it+that-从旬I can t answer for it that he will come.我不能保证他会来。动词+it+介词短语+that-从旬I took it for granted that he would help us.(5)it 在强调句中的用法。强调句的基本结构是：It+be+被强调部分+that(who)+其他部分。It was a computer that he bought last week.练
8、习部分1. I like in the autumn when the weather is clear and bright. A. this B. thatC. it D. one解析C旬中like为及物动词，后面需要跟宾语.而like之后不可直接接从何作宾语.it可用于某些 动词(hate, appreciate)和介词之后作笼统宾语.2. He was nearly drowned once.When waswas in 1998 when he was in middle school.A. that; It B. this; This C. this; It D. that; Th
9、is解析 A. 第一空用 that 指代上文提到的事情; 第二空用 it 指代第一空的 that3. The Parkers bought a new house but will need a lot of work before they can mo ve in.A. they B. it C. one D. which解析 B 此处 it 指代前面出现的 a new house. it 指代上文提到的同一事物 ,为特指;而 one 通常指代同类事物中的某一个.4. Someone is ringing the doorbell. Go and see .A. who is he B.
10、who he is C. who is it D. who it is解析 D 此处 it 用作人称代词,指不明身份,性别的人;宾语从句应用陈述语序.5. In fact is a hard job for the police to keep order in an important football match.A. this B. that C. there D. It解析 D 此处 it 用作形式主语 .6. Mike s mother kept telling him that he should work hard, but didn t help.A. he B. it C.
11、she D. which解析 B 此处 it 用以指代前面的句子,可用that 替换 .7. Since you have repaired my computer, is no need for me to buy a new one.A. it B. there C. this D. that解析 B 考查固定句型There is no need for sb to do sth8. The official made clear that he would do everything possible to solve the problem.A. it B. this C. that
12、D. him解析A此处it用作形式宾语.9. Do you like hereOh, yes, the air, the weather and the way of life. Everything is so nice.A. this B. there C. that D. it解析 D 此处 it 泛指自然环境.10. Bill s aim is to inform the viewers that cigarette advertising in TV is illegal,A. isn t it B. is it C. isn t he D. is he解析 A 主语为“Bills
13、aim” .11. is mentioned above, the number of the students in senior high school is increasi ng.A. which B. As C. That D. It解析B非限制性定语从句中,as /which均可指代整句话的内容，但which只能放在主句后，译为 这一点”；as则位置灵活，译为 正如”.12. It was with great joy he received the news that his lost daughter had been foun d.A. because B. which C.
14、 since D. that解析 D 考查强调句型.13. It was back home after the experiment.A. not until midnight did he go B. until midnight that he didn t goC. not until midnight that he went D. until midnight when he didn t go解析C考查 not until 结构强调句型.14. Why! I have nothing to confess. You want me to sayA. What is it that
15、 B. What it is that C. How is it that D. How it is that解析 A 考查强调句型的特殊疑问句句式.15. It is the ability to do the jobmatters not where you come from or what you are.A. one B. that C. what D. it解析B 考查强调句型.被强调部分是 not where you come from or what you are (but ) the ability to do the job.为了平衡结构，部分移至句尾1. (据报道)a lot of people lost their jobs in the city last month.(repor t)2. (据报道)，a lot of people lost their jobs in the city last month.(re port)3. (毫无疑问) he will be admitted to the key universit
