高二英语人教版选修六第三单元语法讲解 +答案

Book6 Unit3 A healthy life

语法：it 用法

一、代词

1.人称代词it 用来指代上文所提到的事物，或代替整个句子或该句中谓语部分所表示的意思:

①---What do you think of the movie? ---It’s one of the best movies that I’ve seen.

②You saved my life; I’ll never forget it.

③Tom’s mother kept telling him that he should work harder, but it didn’t help.

2.指代婴儿或儿童;在不清楚某人性别时,也可使用it,尤其在问答的形式中更为常见.例如:

①---Who’s the lovely baby? ---It’s Mr. Black’s.

②---Look, someone is coming. Who can it be? ---It may be the headmaster.

1)I was cooking in the kitchen when someone knocked at the door. ___ was my close friend, Lisa. 3.还可以替代指示代词this 或that. ---What is that? ---It is his dictionary.

2)This is the first time that I have come here, ____ ?(反义疑问句)

4.用来表示时间, 天气, 气候, 距离, 温度, 环境, 季节, 价钱, 状况，次数等。

①It's awful—I've got so much work I don't know where to start.（笼统状况）

②How is it going?

③It was very noisy outside now.(表示环境)

3)was a sunny day. Now__ was eight o’clock. They decided to go for a walk to the park, though __ _was two miles away. ___ was so comfortable to walk on the street _____ was quiet there. Suddenly ___ began to rain. They found __ hard to go home. When they got home, they were wet through. Thus ___ was a day that they would never forget.

4)从这到我们家大约半小时的车程。

__ from here to my home.

5)我们希望你如果方便的话，接受我们的邀请。

We hope you ___ .

注：当替代可数名词且后有后置定语的时候，that 可以与the one 互换

6)I have lost my umbrella; I'm looking for__ ___ _.

7)I have lost my u mbrella; I think I must buy ___ _.

8)The umbrella you bought is cheaper than __ I bought.

9)A chair made of steel i s stronger than __ made of wood.

10)My shoes are similar to__ you had on yesterday.

11)The cos t of renting a house in central Xi’an is higher than ____ in any other area of the city.

*难点二：it 表示时间的句型

12)It was already ten o’clock___ he came back yesterday.

13)It was 3 hours __ ____ h e came to himself.

14)It is two years ___ he joined the army.

15)It will not be a long time __ we meet each other again.

16)It was midnight ___ he came back yesterday.

17)It was at midnight ___ he came back yesterday.

18)It was then ___ I realized the importance of learning English.

19)It will be not long __ ______ h e finishes his job.

20)This is the first time that I ___ (pay) a visit to the city.

21)It is time that children __ (go) to bed.

二、形式it: 指代不定式,动名词,从句等,用作形式主语或形式宾语.

I.形式主语:不定式, 动名词以及主语从句作主语时, 为避免“头重脚轻”, 要将真正的主语后置.常见句型有：

①It is important (necessary, obvious, evident, surprising, possible, likely) +to do sth./that…

22)很可能我们的父母能更理解我们并且给我们一些合理的建议。

__ _.

②It is a pity (no wonder, an honor, a fact, a waste of time, one’s /duty/fault…) + to d o sth./that

23)网上聊天是一种时间和精力的浪费，对学习有着极其不好的影响。

__ __ _.

③It is said (reported, suggested, expected, thought, decided, announced, hoped, believed,

d eci d

e d, etc.)+ th at… 常译为“据说（据报道，据悉，认为．．．）”(不能使用to d o 不定式)

24)一般相信阅读增长我们的知识，拓宽我们的视野。

__ _

④It happens /seems /appears /occurs /turned out + that…“ 碰巧…,似乎是…,看起来…”

25)我那天去看你的时候，碰巧你没在家。

__ __

⑤It h it (occurred to; came to; struck)sb. that… 某人想起…

26)他没有想到她会拒绝他的邀请。

__ ____________________ that she would refuse his invitation.

⑥It makes a difference /It doesn’t matter that/wh- (…事关重大/…并不重要）

27)他是否来无关紧要。_.

⑦It takes sb. some time to do sth.

28)It took thousands of people many years ____ (build)the Great Wall.

⑧It’s no use/ good doing sth.

29)一些人认为上大学是没有的，因为大学毕业生找到满意的工作是极其困难的。

__ . 难点三：it is 句型与there be 的区别：注意下列句型用there be 不用it:

There is no doubt that…There was a time when…

There is no trouble or difficulty in doing sth. There is no hope of sth.

There is no sense or point in doing sth. There is a/no chance/possibility that…

There is something wrong with…There used to be…

There is no sign of…There is no denying/saying…