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2.  It + be +名词词组 + to do

常用名词词组：a pity，a fact，a shame，an honor，a question

It’s a pity to leave so early. 这么早真是太遗憾了。

3. It + takes (sb.)+ 时间（金钱）+ to do

It will take a whole day to get to the top of the mountain on foot. 步行将花费一整天时间到达山顶。

④ It is no good (no use，useless)＋doing sth. 做…是没有好处的／没有用的

It is no good smoking too much cigarette. 抽太多烟是没有好处的。

1. There is no need for sb. to do sth. 没必要做某事

There is no need for us to argue about the matter any longer. 对我们来说争论这件事是没有必要的。

2. There is no point/sense in doing sth. 做某事没有意义

There is no point/sense in doing like this，so he will never change his mind. 像这样做是没有意义的，所以他不会改变他的想法。

3. There’s no doubt of sth./that... 毫无疑问……

There is no doubt of his success. 毫无疑问他一定会成功。

1. the more...the more... 越……越……

The more tickets you sell，the more money you will get. 你卖越多的票，你就会赚越多的钱。

2. When it comes to... 当谈到……

When it comes to repairing machines，I have no knowledge of it. 说到修机器，我一无所知。

3. It is/was the first time that sb. have/has/had done sth. 是某人第一次做……

It’s the first time that I have studied abroad. 这是我第一次出国。

4. A is to B what C is to D. A 对 B 而言就像 C 对 D 一样……

Air is to man what water is to fish. 空气对人来说就像水对鱼一样。

5. do one’s best / make every effort to do 竭尽全力

We students should do one’s best / make every effort to study. 我们学生应该竭尽全力去学习。

6. Hardly…when… / No sooner…than… / Scarcely…when… 一……就……

Hardly had he arrived home when it began to rain. 他一到家就开始下雨了。

7. It’s (high) time (that) sb. did/should do sth. 是该做……的时候了

It’s time we went to school. 是时候该去学校了。

8. be about to do sth when 正打算做某事突然……

He was about to go out when the telephone rang. 电话响的时候我正打算出去。

9. It happened that… 碰巧……

It happened that I knew the person you mentioned just now. 碰巧我认识你刚刚提到的那个人。

10. would rather do sth. than do sth. = would do sth. rather than do sth. = spanfer to do sth. rather than do sth. = spanfer doing sth. to doing sth.宁愿做……而不愿做……

I would rather remain poor than get money by dishonest way. 我宁愿贫困也不愿通过不诚实的方式来获得财富。

11. too 句型

(1) too…to…太……而不能……

Politics is too important to be left to the politicians. 政治太重要了，不能交给政客们处理。

(2) can’t … too +形容词 无论……也不为过

You can not be too careful. 你再小心也不为过。

12. as we all know / as is known to all 众所周知

As we all know, China is developing rapidly. 众所周知，中国正在飞速发展。