1、1高三一轮复习 It 的用法总结It 的用法在高考中也是重现率较高的语言点，尤其是 it 用于强调句。其考查方式多通过“语法填空” 进行，偶尔也出现在“短文改错”和“完形填空” 中。一、it 作人称代词的用法1. 指事物 作为人称代词，it 可以除人以外的一切事物或动物。如：I dropped my watch and it broke. Its hard work, but I enjoy it. “Where is the dog?” “Its in the bedroom. ” 2. 指人 it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如：Is it a boy or a g
2、irl? There is a knock on the door. It must be the postman. 【说明】在答语中，常用来指本人，如说 Its me。3. 代替某些代词代词 it 还可用于代替指示代词 this, that 以及复合不定代词 something, anything, nothing 等。如：“Whats this?” “Its a new machine. ” Nothing is wrong, is it? 二、it 作非人称代词的用法1. 基本用法 ： 主要用于指时间、距离、价值、天气、气候及温度等自然现象。如：Its too late to go th
3、ere now. It rained all day yesterday. It can get very hot here. 2. 用于某些句型：Its time for sb to do sth. 某人该干某事了。Its (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用 “should+动词原形” )Its first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时)Its + 时间段 + since-从句. 自从有一段时间了。Its + 时间段 + before-从句. 过多长的时间才I
4、ts not untilthat.直到 才.三、it 用作形式主语1. 基本用法：当不定式、动名词、从句等复杂成分用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语 it。如：Its very important to remember this. Its hard work climbing mountains. Its unknown when he will come. 2. 用作形式主语的的重要句型(1) It + be + adj. for (of) sb to do sth 某人做某事It is hard for him to make up his m
5、ind. （介词 for 表示对象，意为“ 对来说” ）It was foolish of her to say such a thing. （of 用于指某人的性格、属性、特征等）(2) It takes sb + 时间段 + to do sth. 某人做某事花了时间(3) It is up to sb to do sth. 该由某人做某事(4) it look (seem, appear, happen, occur) that as if 似乎(5) If it were not for / If it hadnt been for 若不是因为四、it 用作形式宾语当不定式、动名词、从句
6、等复杂成分用作宾语且其后跟有宾语补足语时，通常会在宾语补足语前使用形式宾语，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)”。如：I find it difficult to do the job well. I think it best that you should stay here. We think it no use complaining. 五、用于强调句型即“It is/was被强调部分that/who/whom+其它”句型之中。2It was yesterday that I met your father in the stre
7、etIt was in the street that I met your father yesterday.It 的相关练习姓名：_ 得分：_一、选择题 20( )1. It was at the gate _ he told me the news. A. that B. what C. which D. when( )2. Is _necessary to complete the design before National Day? A. this B. that C. it D. He( )3.I dont think _possible to master a foreign
8、language without much memory work. A. this B. that C. its D. it( )4.Does _matter if he cant finish the job on time?A. this B. that C. he D. it ( )5.It was not _she took off her dark glasses _ I realized she was a famous film star. A. when; that B. until; that C. until; when D. when; then 二、填空 201. _
9、（据报道）a lot of people lost their jobs in the city last month.2. _（碰巧）I had been away when he called.3._（看来）nobody knows what has happened.(seem) 4. _（感到遗憾）I havent been to the get-together.5.Its no use_（为打翻的牛奶而哭泣).3、改写下面的强调句 40My father did the experiment in the lab yesterday evening. 主 宾 地点 时间 1._（强
10、调主语） 2._（强调宾语） 3._（强调时间状语） 4._（强调地点状语） I met your father in the street yesterday .5._(强调宾语)6._（强调地点状语） 37.He didnt realize his fault until we pointed out it to him. （改为下面句型结构 ）It was not until _that _.四、翻译 201.是该我们好好学习的时候了。_2.健康饮食是非常重要的。_3.抱怨是毫无用处的,他们从来都不听的。_4. 我们昨晚直到十点才到家。_It 的答案一ACDDB 二. It was re
11、ported thatIt happened thatIt seems thatI feel it a pity thatcrying over spilt milk三、1.It was my father did the experiment in the lab yesterday evening.（强调主语） It was the experiment that my father did in the lab yesterday evening.（强调宾语） It was yesterday evening that my father did the experiment in th
12、e lab.（强调时间状语） It was in the lab that my father did the experiment yesterday evening.（强调地点状语） 2.Its your father that/who I met in the street yesterday.It was in the street that I met your father.3. we pointed out his fault to him; he realized it.四1.It s time for us to study hard. /Its high time that we studied hard.2.Its is important to eat healthy food. 3.It is useless to complain,they never listen./ Its /Theres no use complaining ,they never listen.4.It was not until ten oclock that we got home last night
