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1、高中英语高中英语 语法总复习语法总复习it的用法的用法it it代词，常出现在对话、阅读中it it用法用法天气、环境、季节、时间、距离不知性别的孩子或身份不明确的人上文提到的事物作形式主语或形式宾语用于强调句中高考实战分析&练习(1)(1)指指天气、环境、季节、时间、距离天气、环境、季节、时间、距离1.It is early spring,but it is already very hot.现在是初春，但天气已经很热了。2.It is 12 oclock now.现在十二点了。3.-How far is it from your home to school?.-从你家到学校有多远？.-I
2、t is about twenty minutes walk.-大约20分钟的步程。(2)(2)指指不知性别的孩子或身份不明确的人不知性别的孩子或身份不明确的人1.-Who is it knocking on the door?.-谁在敲门？.-It might be Tom.-可能是汤姆。Is it a boy or girl?是男孩还是女孩？(3)(3)指代上文提到的事物指代上文提到的事物1.My pen is missing.I cant find it anywhere.我的笔不见了。我找不到它了。(it指代上文中提到的pen)此处作using的宾语，根据语境可知，所填词指代上文的ra
3、ilway，故填it2.However,the railway quickly proved to be a great success and within six months,more than 25,000 people were using _ every day.it(4)(4)作形式主语或形式宾语作形式主语或形式宾语，代替动名词、不定式或从句代替动名词、不定式或从句1.It is unknown when he will come.他什么时候来还不知道。(it作形式主语，从句是真正的主语)2.I find it difficult to work with him.我发现和他一起
4、工作很困难。(it作形式宾语，不定式是真正的主语)注意:某些动词(短语)后接从句时要用it作形式宾语，再接从句，构成“动词(短语)+it+that/if/when/.从句”，如：I hate/like it when.我讨厌/喜欢.You should see to it that.你应该确保.You can depend on it that.你可以相信.I cant help it if.如果.我也没有办法I would appreciate it if.如果.我将感激不尽常用常用it it作形式主语的句式作形式主语的句式It is no wonder that.难怪.It is a pi
5、ty/shame that.真可惜/丢人.It seems/appears that.似乎/看起来.It seems/looks as if/though.看起来好像.It occurs to/comes to/hits sb.that某人突然想起.Its said/reported/believed/well-known.据说/据报道/人们认为/众所周知.It was/has been+时间+since.自从.多长时间了It is/will be+时间+before.多长时间才It is+形容词(+of/for sb.)+to do sth.(某人)做.是.的Its time(for sb.
6、)to do sth.到(某人)做某事的时间了It is/was/will be the first/second/.time that.这是第一/二/.次做.It is no use/good doing sth.做某事没有用/好处(5)(5)用于用于It is/was.that/who.It is/was.that/who.强调句中强调句中1.It was they that/who cleaned the classroom yesterday.昨天是他们打扫的教室。It was Thomas Edison that/who invented the bulb.是托马斯爱迪生发明的电灯泡
7、2.They cleaned the classroom yesterday.他们昨天打扫了教室。去除强调句句式后句子成分完整(6)(6)高考实战分析高考实战分析&练习练习-it-it高考主要考察it作替代词；it与one,that的区别,it作形式主语、形式宾语的用法，以及it用于固定句式、强调句型的情况。答题时，无法判断填什么词时，要考虑句子是否为含有it的固定搭配或句式。实例:(浙江卷)Many westerners who/that come to China cook much less than in their own countries once they realize ho
8、w cheap _ can be to eat out.it分步解答:分析句子成分:“how cheap _ can be to eat out”是宾语从句，且为感叹句结构，空格处在句中作主语，但句中的不定式to eat out是主语，所以空格处需要用形式主语;确定代词形式:it可作形式主语。(6)(6)高考实战分析高考实战分析&练习练习-it-it实例:(全国卷改编)Sarah made _ to the airport just in time to catch her plane this morning.it分步解答:分析句子成分，made后面缺少宾语;分析句意:“今天早上萨拉及时到达
9、了机场，正好赶上飞机。”make it 为固定搭配，意为“成功做某事;及时到达”(6)(6)高考实战分析高考实战分析&练习练习-it-it实例:(全国卷)If you are time poor,you need run for only half the time to get the same benefits as other sports,so perhaps we should all give _ a try.it实例:(四川卷改编)New technologies have made _ possible to turn out new products faster and a
10、t a lower cost.it实例:(全国卷)If you are time poor,you need run for only half the time to get the same benefits as other sports,so perhaps we should all give _it_ a try.give it a try/go试一试固定搭配实例:(四川卷改编)New technologies have made _ it_possible to turn out new products faster and at a lower cost.have made后
11、缺少宾语不定式引导的句子为真正主语使用it作形式宾语练习练习1Excuse me,where is Xingguang Theatre?Go along this road to the end,and youll find _ on your left.AoneBanyCitD.that2The gravity on Mars is only about there eighths of _ on the Earth.AthoseBthatConeDit3I have a few books on Chinese food.You can borrow _ if you want.AoneB
12、itCmuchDa little特指 同类同物特指 同类异物泛指 同类异物练习练习4What do you think of learning Chinese,David?Actually,I find _ hard to learn Chinese well in a short time.AthatBoneCitD.this5Lots of people like to give out Hongbao to each other on Wechat.Thats true.Ive just received _ from my friend.A.itB.thatC.oneD.this6We
13、 all think _ quite necessary to stop school bullying(校园欺凌)A.itB.herC.thatD.thisit作形式宾语泛指 同类异物it作形式宾语it it知识点补充知识点补充it itit变化成形物代形式itits(它的)it变化成反身代词ititself(它自己)it变化成复数形式itthey(他们 主格)itthem(他们 宾格)it和现三单It sounds good.注意区分its和itsits=it is练习练习7Data about the moons composition(构成),such as how much ice and other treasures it contains,could help China decide whether _(it)plans for a future lunar(月球的)base are practical.AitsBitsCitselfD.them8Surprisingly,Susans beautiful hair reached below her knees and made _ almost an overcoat for her.AherselfBitsCitselfD.it形物代+名词头发自己形成Thank youThank you