人教版高考语法复习：it的使用课件（24张ppt）

(共24张PPT)
Discovering useful structures
The use of “it” (1)
Go over the first paragraph of the letter and find out all the sentences with “it”.
a. It’s a beautiful day here---
b. It’s amazing that at my age I am still fit
enough to cycle 20 kilometres in an
afternoon.
c. It’s my birthday in two weeks time---
The use of “it” (1)
What is it used to stand for in these sentences?
1.用作人称代词，代表前面提到的人或事物。
Who’s it? _________me.
Look at the picture. _____is a picture of our school.
It’s
It
2.用于代替指示代词this 和that.
it做代词
-Have you heard the latest news? -No, what _____ ? (2007全国) A. is it B. is this C. are they D. are those
3.用以表示时间、距离、天气、气候、季节、环境等
It is half past eight now.
It’s only half an hour’s walk from here to our school.
I hope that it will be fine tomorrow.
It rains cats and dogs.
It’s spring now.
It’s noisy here.
Time
Distance
Weather
Weather
Season
Surroundings
What does it stand for?
It is important to know your limitations.
It is a good idea to have a little notebook at hand.
It is not worthwhile quarrelling with him.
It is strange that it hasn’t been noticed before.
It happened that the harvest was had that year.
It was clear enough what he meant.
你知道下列句中 “it”分别指什么吗?
It is important to know your limitations.
It is a good idea to have a little notebook at hand.
It is not worthwhile quarrelling with him.
It is strange that it hasn’t been noticed before.
It happened that the harvest was had that year.
It was clear enough what he meant.
it做形式主语
“it” stands for “to do”, “doing” or a clause .
it做形式主语
It’s + 形容词/名词 + to do

e.g. It’s my duty to take care of all the students.
It’s careless ____ her to make a spelling mistake.
It’s hard ____ me to finish it in two days.
It’s + 名词 + doing
e.g. It’s fun/no use/no good/a waste of time doing sth.
of
for
“to do”/“doing”
^
+ (for sb./of sb.)
2. 和一个固执的人争辩是没有用的。
1. 吸毒是违法的。
3. 对瘾君子而言戒烟是很难的。
Let’s practice !
It is illegal to take drugs.
It is no use arguing with a stubborn person.
It is tough for addicts to quit smoking.
“it” stands for a clause .
____________(碰巧) that he was out.
_____________ (显而易见地) that smoking is harmful to health.
__________________ (不用说) that a cigarette is a killer.
______________ (我突然想起来) me that I have met him somewhere before
________________(难怪) that he feels sick.
____________________ (有待看)
whether it is useful.
It happened
It is obvious
It goes without saying
It occurred to
It’s no wonder
It remains to be seen
it做形式主语
It’s amazing that at my age I am still fit
enough to cycle 20 kilometres in an
afternoon.

真正的主语 that at my age I am still fit
enough to cycle 20 kilometres in an
afternoon it形式主语

structure: It is+ adj. +that---
It stands for a clause:
他居然还活着，真是个奇迹。
It is a wonder that he is still alive.
Structure: It is a fact (a shame, a pity,
no wonder---) that---
Special notice:
it be vs. there be
“是”
“有”
________ someone at the door. I think ________ the man to deliver the milk.
Let’s hurry! ________ only half an hour left.
________ no need to hurry. We still get much time.
________ a wonder that he refuses the job.
There is
it is
There is
There is
It is
It is? There is?
碰巧，那年收成不好。
It happened that the harvest was bad that year.
Structure: It seems (happened, doesn’t
matter, has turned out---) that---
Whether he will come or not doesn’t matter.
It doesn’t matter whether he will come or not.
据说，日本发生了地震。
It is said that there has been an earthquake
in Japan.
Structure: It is said (reported, decided,
suggested---) that---
People widely accept that smoking does damage to our health both physically and mentally.
It is widely accepted that smoking does damage to our health both physically and mentally.
It is said that Tom is a faithful worker.



It is reported that the murderer has been arrested.


It is believed that all the students have done their best.
= Tom ___ _____ __ ___ a faithful worker.
is said to be
= The murderer is reported to have been arrested.
= All the students are believed to have done their best .
对我们有好处还是有害处, 还要等着瞧
It remains to be seen whether it will do
us harm or good.
Structure: It … w/h-clause
When we will go on outings has not been decided.
It hasn’t been decided when we will go on outings.
以及形式宾语
I think it no use arguing with him.
It is no use arguing with him.
It is clear that he was not interested in this subject.
He made it clear that he was not interested in this subject.
It is very interesting to study English.
I found it very interesting to study English.
It 充当形式主语
It is clear that he was not interested in this subject.
He made it clear that he was not interested in this subject.
It is very interesting to study English.
I found it very interesting to study English.
It is no use arguing with him.
it的模糊指代
指it用来指代后面从句的情况,因为后面的从句不能充当宾语.
e.g. I can’t help it if she is always late.
I hate it when people talk with their mouth full.
I don’t like it when a Chinese host keeps serving me the food I don’t like.
I’d appreciate it if you can give me some useful information.
“it” is used in some expressions or idioms
Use of “it”
It is difficult to quit smoking, but believe it or not, he made it.
make it 及时赶到;成功;办成
You needn’t worry; he will make it.
你不必担心, 他会办到的。
“it” is used in some expressions or idioms
Use of “it”
2.--- Are you going to the party tonight?
--- I don’t know. _____________.
3. That’s it. I’ll not put up with any more of her rudeness.
4. Switch on the computer at the back. That’s it.
5. --- What were you saying about John?
--- Forget it. It doesn’t matter.
It all depends
catch it 被责骂; 受处罚
e.g. If I come home late I’ll catch it from my mother.
如果我回家晚了, 我妈妈会骂我。
You’ll catch it because of your carelessness.
你会因为你的不小心受处罚的。
It的一些习惯用法
How is it with your study? 你学习好吗？
It went hard with him. 他身遇不幸。
It is all over with me. 我完蛋了。
We must fight it out.我们必须坚持到底。
I can’t help it. 我没有办法。
It is never too old to learn.
活到老，学到老。
It never rains but it pours(泼水).
不鸣则已，一鸣惊人。
It is easy to open a shop but hard to keep it
always open.
创业容易守业难。
It takes three generations（代） to make
a gentleman.
十年树木，百年树人。
Proverbs(谚语)
with “It”
Homework
1.巩固掌握it的用法。

2.完成导航period 2。

3. 准备第一次听写。