备战2022年高考英语二轮复习专题01-代词it的用法与常用句型课件（22张）

(共22张PPT)
it的用法和常用句型
i可以作代词,形式主语,形式宾语,还可以
用于强调句中。
、i作代词
1.指前面已经提到的事物、不知性别的婴儿或
身份不明的人(由于某种原因而不知道对方
是谁)。如:
He bought a book and gave it to me.
John has got a dog; he has had it for four
months。
Someone is ringing the doorbell. Go and see
who it is
2.表示天气、日期、时间、距离等。如:
It is raining heavily outside
It's Monday today.
It's a long time since we met last time.
It's about two kilometers from here to the
station
3用以代替指示代词this,that。如:
What's this
-It's a flag.
二、it作形式主语或形式宾语
1.it作形式主语
1)真实主语是不定式或动词-ing形式。如:
It would be a pity to miss this opportunity.
It's no good standing here in the cold. Let's
go home.
2)真实主语是主语从句。常见句型如下:
a.It+be+名词+主语从句。
It is a pity/ shame that.真可惜
It is no wonder that.不足为奇,并不奇怪
. g. It is a great pity(that) he cant swim.
You past the exam It is no wonder that you
look so happy.
b.It+be+形容词+主语从句。
It is certain that.肯定
●。●●●●
It is well- known that.众所周知
e.g. It is certain that we shall be late.
It is impossible that it(should)be a mere
coincidence
It's strange that he knows nothing about it.
It was not clear to me why he behaved like
that