(共16张PPT)
“it”的用法
Grammar
一、“it”的一般用法
一、代词it
判断下列代词的用法
1. The pen is beautiful and it is mine
it是第____人称,指代_________
2. My pen is missing and I can’t find it.
it是第____人称,指代____________
3. This is my new pen. I bought it yesterday.
it在句子中作____语,指代上文的_____
4. ---Whose umbrella is that ---It is Marry’s
it在句子中作____语,指代上文的_____
三
the pen
三
my pen
宾
this
主
that
5. Is it a boy or a girl
it是第____人称,指代性别不详的婴儿
6. The bell is ringing. It must be the postman.
it是第___人称,指代身份未确定的一个人
三
三
7. It is Sunday today. It 指_______
8. It is three o’clock now. It 指_______
9. It was raining this morning. It 指_______
10. It is in the two miles to the beach. It 指_______
11. It is 40 degrees Celsius outdoors. It 指_______
12. It was very quiet at the moment. It 指_______
日期
时间
天气
距离
温度
环境
归纳总结:
1.代替前文提到过的事物、前文的指示代词(that, this)。(如1-4)
2.指代性别不详的婴儿、身份未确定的一个人.(如5-6)
3.指日期、时间、天气、距离、温度、环境情况.(如7-12)
区别it . that. one用法
1. The couple bought a new house but it (= the house) will need a lot of work before they can move in.
2. I’m moving to the countryside because the air there is much fresh than that (=the air) in the city.
3. We have been looking at houses but haven’t found one (=a house) we like yet.
归纳总结:
______ 和______ 都替代“the+单数名词”,都是特指,都可替代可数和不可数名词,但______ 指前面提到的“同一”事物,而______ 是指前面提到的“同类”事物,含有“这”跟“那”的比较。
________ 替代“a+单数可数名词”,表示泛指同类事物中的任意一个
it
that
that
it
one
练习:用it . that. one填空。
He give me a pen, and I like _____ very much.
The weather here is hotter than _______ of Yunnan.
I like this kind of pen, so I want to buy _______.
it
that
one
This apple is small. Please give me a big _________.
These books are mine. Those ______ are Lily's.
Where is my new pen I can't find ____ .
I have lost my umbrella; I think I must buy _______.
The umbrella you bought is cheaper than _______ I bought.
that
one
ones
it
one
附加练习:用it, that , one 填空
判断“ it ”的用法:
1. It’s very quiet in the café.
2. It rained for three days .
3. It’s three miles from here to the nearest garage.
4. A tall man stood up and shook hands. It was captain Lawrie.
5. I hear you bought a new bike .Can you show it to me
6. It was five o’clock when we got back home yesterday.
7. It was dirty and wet below the ship where the slaves were kept.
1. 环境
2. 天气
3.距离
4. 代表前面提到的人
5.代表前面提到的物
6. 时间
7. 环境
巩固练习
形式主语
二、it 作形式主语
观察以下句子
It is amazing that at my age I am still fit.
2. It is said that he had passed the exam.
3. It is a pity that he is ill.
4. It is easier to fall than to rise.
5. It is no use crying over spilt milk.
it可以放在句中代替
____, ___________
或 ____________ 作形式主语
从句
不定式(短语)
动名词(短语)
1.It is amazing that at my age I am still fit.
it 作形式主语一
句型结构:
It is +
It is + adj. (important, necessary...) +that + sb. + (should) do sth.
it 是形式主语,真正的主语是that 引导的从句。
该句型中,如果形容词是important,right, necessary等,that后的从句中要用虚拟语气(should + 动词原形),should 可以省去。
It is important that we (should) learn English well.
adj.
+ that ...
2. It is said that he had passed the exam.
it 作形式主语二
句型结构:
It is+
译为 “据说,据报道,据悉……”that引导的从句是真正 的主语
done ( said, reported...)
+that ...
3. It is a pity that he is ill.
it 作形式主语三
句型结构:
It is +
该句型中,that后的从句一般用虚拟语气(should + 动词原形),should可省去,表示出乎意料,常译为"竟然"。
n. (a pity, a shame...)
+that ...
4. It is easier to fall than to rise.
it 作形式主语四
句型结构:
It is +
it 作形式主语,代替真正的主语 to do sth.
adj.
+ to do sth.
5. It is no use crying over spilt milk.
it 作形式主语五
句型结构:
It is +
该句型中的真正主语是动名词短语,译为“做...是没有用/好处的”。
no use/good
+doing sth.
1. It is + adj. + that ...
2. It is + adj. (important...) +that + sb. + (should) do sth.
3. It is+ done ( said...) +that ...
4. It is + n. (a pity...) +that ...
5. It is + adj. + to do sth.
6. It is no use/good + doing sth.
总结:it作形式主语的常见句型
1.We think it important to learn English.
2. I would appreciate it if you could come to my birthday party.
3. You may depend on it that we shall always help you.
it作某些动词(make, think, find, consider...)的宾语
某些表示“喜、怒、哀、乐”的动词(like, enjoy, hate, appreciate...)往往用it作形式宾语,再加上if/when等引导的宾从。
某些动词短语(ask for, depend on, insist on...)后常用it作形式宾语。
为保持句子结构平衡,避免头重脚轻,常用it代替不定式、动名词或从句在句中作形式宾语。
it 作形式宾语