it用法公开课PPT课件

the thing
--- It’s a flag.
3. 用以代替未知的人或婴儿。 Someone is knocking at the door. Go and see who it is.
代词 it
4. 做非人称代词，指代时间、天气、距离、
环境、季节、日期、价值等。
It’s time for class. 时间
常见的adj.有:possible;clear;obvious;true,etc
It is very clear that he grows like a tree. (2) It is + n. + that 从句
常见的n.有:a shame; a pity, a fact,etc
It is a pity that you missed the football match. (3) It is + v-ed + that 从句 It is said (reported/believed/ thought/known/ told/ suggested.....) that ... 译为“据说（据报道，据 悉…）”。 It is said that he has gone to Beijing. (4It)iIstrheappopretends/tsheaetmChs/aaiprmpeaanrsX+i wthialltvis从it句Hangzhou. It seems that there is no way out of our difficulty.
Grammar
The use of “it”
How much do you
know about “it”?
引导词 it
代词 it
The Use of “it”
It句型归纳 Sentences With “it”
代词 it
your body
1. 做人称代词，代替前文提到过的事物。
You body becomes accustomed to having nicotine in it.
the door, he found nobody but a note on the
ground. He picked it up and read. It is
surprising that the note should have been
given to his neighbour. note
---What's the date today? ---It's May 15, 2013.
日期
---What's the cost of the T-shirt?
---It is 150 yuan.
价值
the use of it
天气
距离
It was a sunny day. Peter decided to go
（1）It is+ adj.+（for sb.）to do sth.
此处adj. 通常为描述事件的形容词：easy; hard; difficult; necessary; likely; impossible; important; useful; dangerous…
It is important for a teenager to learn English well.. = to learn English well is important to for a teenager
It is summer now and it gets hotter and hotter.
季节
天气
It’s about two kilometers from here to my home. 距离
It is very quiet in our classroom every night. 环境
(4) It takes Sb. some time to do...
e.g. It took me 3 days to prepare this lesson.
(5) It's no good/use doing…
e.g. It's no use crying over spilt milk.
(1) It is + adj. + that 从句
As you know, if you do the same thing over and over again, you begin to do it automatically.
2. 用以代替指示代词this, that。
--- Whose text-book is that? --- It’s hers. --- What’s this?
= You are kind to help me with the problem.
（3）It is + 名词 + to do sth.
常用的名词有：fun; pity, shame, pleasure... e.g. It is fun to go out for a walk.
不可数名词 It is a shame to be late for class It is a pleasure to have the chance to help you.
形式主语
引导词 it
1、It was so comfortable to walk on the street.
形式主语
真正主语
= To walk on the street was so comfortable.
2、It is no good smoking. = Smoking is no good.
（2）It is + adj. + （of sb.） to do sth.
此处adj. 通常为描述人的形容词：kind; rude; silly， careful; careless; foolish; stupid; clever; wise...
It's kind of you to help me with the problem.
形式主语 真正主语
3、It is am amazing that at my age I am still fit.
形式主语
真正主语
= That at my age I am still fit is amazing.
Summary： it作形式主语，代替由不定式（或不 定式复合结构）、动名词或从句表示的真正主语。
for a walk to the park even though it was 2
miles away. He未w知a的s人just about to leave the
house when somWho is it?”,he thought. When he opened