(共17张PPT)
高中英语 语法总复习
it的用法
it
代词,常出现在对话、阅读中
it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)指天气、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 o’clock 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?
.-It is about twenty minutes’ walk.
.-大约20分钟的步程。
(2)指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)指代上文提到的事物
1.My pen is missing.I can’t 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railway,故填it
2.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)作形式主语或形式宾语,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:
①I hate/like it when... 我讨厌/喜欢...
②You should see to it that... 你应该确保...
③You can depend on it that... 你可以相信...
④I can’t help it if... 如果...我也没有办法
⑤I would appreciate it if... 如果...我将感激不尽
★常用it作形式主语的句式★
It is no wonder that... 难怪......
It is a pity/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...
It’s 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
It’s time(for sb.) 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)用于It is/was...that/who... 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
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)高考实战分析&练习-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 how cheap ____ can be to eat out.
it
分步解答:
①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;
②确定代词形式: it可作形式主语。
(6)高考实战分析&练习-it
实例:
(全国卷Ⅱ·改编)Sarah made ____ to the airport just in time to catch her plane this morning.
it
分步解答:
①分析句子成分,made后面缺少宾语;
②分析句意: “今天早上萨拉及时到达了机场,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)高考实战分析&练习-it
实例:
(全国卷Ⅰ)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 at a lower cost.
it
实例:
(全国卷Ⅰ)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.
①have made后缺少宾语
②不定式引导的句子为真正主语
③使用it作形式宾语
练习Ⅰ
1.—Excuse me, where is Xingguang Theatre
—Go along this road to the end, and you’ll find ________ on your left.
A.one B.any C.it D.that
2.The gravity on Mars is only about there eighths of ________ on the Earth.
A.those B.that C.one D.it
3.I have a few books on Chinese food. You can borrow ________ if you want.
A.one B.it C.much D.a little
特指 同类同物
特指 同类异物
泛指 同类异物
练习Ⅱ
4.—What do you think of learning Chinese, David
—Actually, I find ________ hard to learn Chinese well in a short time.
A.that B.one C.it D.this
5.—Lots of people like to give out Hongbao to each other on Wechat.
—That's true. I've just received ________ from my friend.
A. it B. that C. one D.this
6.We all think ______ quite necessary to stop school bullying(校园欺凌)
A. it B. her C. that D. this
it作形式宾语
泛指 同类异物
it作形式宾语
★it知识点补充★
it
it变化成形物代形式
it→its(它的)
it变化成反身代词
it→itself(它自己)
it变化成复数形式
it→they(他们 主格)
it→them(他们 宾格)
it和现三单
It sounds good.
注意区分its和it’s
it’s=it is
练习Ⅲ
7.Data about the moon’s 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.
A.it’s B.its C.itself D.them
8.Surprisingly,Susan’s beautiful hair reached below her knees and made ____ almost an overcoat for her.
A.herself B.its C.itself D.it
形物代+名词
头发自己形成
Thank you~