代词it的基本用法it

1、精选文库C-代词it的基本用法I*匕知识梳理代词it.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可以指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

2、must be the postman.“ ListenSomeone 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, anyth ing, nothing 等，如：“What tisis? ” “It a new machine. ”.it用作非人称代词的用法1）it用作非人称代词用来指时间、距离、价值、天气、气温及温度等。如It too late to go there now.现在去那已经太迟了。It rained all day yesterday昨天下了一整天雨。

3、2）用于某些句型。It tsme for sth.该做某事了。It tSme to do sth.是时候该做某事了。It tsme for sb to do sth.某人该干某事了。It (about/high) time +that-从句。某人该做某事了。It fsst(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 +时间段+sinee从句。自从以来有一段时间了。It +时间段+before从句。过多长时间才 三.it用作形式主语的用法。it。如1)当不定式、动名词、从句等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句末，而句

4、首使用形式主语It vsery important to remember this.It hard work elimbing mountains.It 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.某人做某事是的It is hard for him to make up his mi nd.他很难下定决心。It was foolish of her to say such a thing.她说那样的话，太愚蠢了。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

5、。介词for表示对象，意为 对来说”。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 up to you to make the choice.该由你来做选择了。 It looks(seems,appears,happens,occurst)iat (as if) 似乎It seems as though he didn rteeognize me.四.it用作形式宾语的用法。1)当不定式、动名词、从

6、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句末。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 difficult to do the job well.I think it best that you stay here.We think it no use complaining.2)用作形式宾语的几个特殊结构:动词+it+that-从句I think it (that) he will come on time. 动词+it+when(if)-从句We really app reciate i

7、t whe n she offered to he Ip. 动词+prep .+it+that-从句I can a nswer for it that he will come.我不能保证他会来。动词+it+介词短语+that-从句I took it for gran ted that he would help us.五.it在强调句中的用法。强调句的基本结构是：lt+be+被强调部分+that(who)+其他部分。能力提升单项选择1. It was at the gatehe told me the n ews.A. thatB. whatC. whichD. whe n2.Isn ece

8、ssary to tell his father everythi ngA. itB. thatC. whatD. he3. Was it in this p alacethe last emp eror died?A. thatB. i n which C. i n where D. which4. Isp ossible to fly to the moon in a sp acesh ip?A. nowB. manC. thatD. it5. Was it during the Second World Warhe died?A. thatB. whileC. in which D. t

9、hen6. Isn ecessary to compi ete the desig n before Nati onal Day?A. thisB. thatC. itD. he87.1 dont thinkP ossible to master a foreig n Ian guage without much memory work.A. this B. that C. itsD. it8.DoesA. thisB. that C. heD. it9.It was notshe took off her dark glassesI realized she was a famous fil

10、mstar.A. whe n; thatB. un til; thatC. un til; whe nD. whe n; the nmatter if he cant finish the job on time?t heA. heB. whichC. sheD. it10. Tom s mother kept telling him that he should work harder, butdidn11.is a fact that En glish is being acce pted as an intern ati on al la nguage.A. ThereB. ThisC.

11、 ThatD. It12. IsB. manC. thatD. it13. Our food and service are better thanused to be.A . itB . weC. theyD . them14 .app ears to methe report must be true.A . That; it B . It; thatC . It; it D . That; that15 . He feelsduty to help others.A . that he B . that hisC . it heit his16. Takeeasy. The roads

12、are icyi词典不紧张;松懈；不生气；不激A . itB . themC . usyoup ossible to fly to the moon in a sp acesh ip?waswho I met in the museum this morning.18 .A . It; him B . It; he C . That; he D. That; himHave you found the bike you lost yesterday?Yes, Ive foundalready.A . itB . thatC . the oneD . that one19.Some one is

13、 at the door, who isA. thisB. thatC. itD. he20. It is raining cats and dogs.D. Neither is itA. So it is B. So is it C. Neither it is金小结C-含it的9个常用句型卑I知识梳理1. It does nt matterIt doesn t matter what he s他说什么都没关系。2. It app ears/ seems/ happen s/says thatIt seems that he is always correct他 好像总是对的。It happ

14、ened that I had no money with me 碰巧我当时没有带钱。3. It is said/ rep orted/ believed/ un derstood thatIt is said that he has joi ned the Party据 说他已经入党了。4. It is a waste of time /money doing sth.It s a waste of time your talking to hi你和他谈是浪费时间。5. (It is) no won der( that)It s no wonder he is not hungry;has been eating sweets all day.难怪他不饿，他整天在吃糖果。6. It makes no/mush differe neeIt s doesn t make much differenee my being我在不在那儿没有什么影响。7. it takes sb. some time to do sth.It took m