it用法详解.pptx

It的用法
代词:用于指人以外的一切生物,无生命的东西和事情
日期,距离,价值,度量,温度,环境等
it 用作非人称代词,指代日期、时间、季节、天气、温度、距离、重量、环境、情况等, 常不翻译出来
It’s quite hot here in summer, isn’t it ?
It’s early midnight now . We’d better go to bed.
It’s about an hour’s drive from here to Nanchang.
It was noisy last night.
— Do you like it here?(2004年高考全国卷Ⅱ)
—Oh, yes. The air, the weather, the way of life.
—Everything is so nice.
(天气)
(时间)
(距离)
(情况)
(环境等)
指代性别不详的婴幼儿
他\她是谁?
Who is it?
指代说话者心目中不太清楚的那个人
---Who is knocking at the door?
---It's may be Tom.
The baby is crying. It might be hungry.
—“Who is it over there?”
—“It must be headmaster.”
—“No, it can’t be him, for he has gone to Paris.”

,代替前文提到过的事物,以避免重复:
Throw wasted paper in the dustbin. It's just beside you.
:
This spade is made of iron. It is known to all.
(在回答含有指示代词this\that的问句时,常用it指代)---Who is that?-- It is Lucy.
What’s that on the right? I guess it might be a watermelon.
—“Hello! Who is that (speaking)?”
—“This is john/I (speaking).
此处不能用it代this
it 指代上文提到的表特指的单数可数名词或不可数名词,即“同类又同物”;
one表示“同类不同物”, 只能代替可数名词单数,相当于a/an+可数名词单数;还可以指众多中的一个(注意它在定语从句中的指代)(复数n用ones指代)
that 表示“同类不同物”,(只在平级结构或比较级结构或表对比结构中指代前文出现的表特指的可数名词单数或不可数名词。(复数名词用those指代)
I had a good pen, but I lost it yesterday. I’ll buy one tomorrow.
注 1: it, one, that 区别
The Parkers bought a new house but ___ will need a lot of work before they can move in.
A. they B. it C. one D. which
2. We’ve been looking at houses but haven’t found ___ we like yet.
A. one B. ones C. it D. them
3. I’m moving to the countryside because the air there is much fresher than ___ in the city.
A. ones B. one C. that D. those
易误辨析:
it / one / that
B
A
C
the house that the Parkers bought
a house
the air
Exercises:
1.---would you like to buy a bicycle of this kind?
---Yes, I'd like to have_________.
A. it
color of my coat is different from__of yours.
A. it B. one C. that D. this
machines we use today are much better than _____we use t