It相关用法大全
一、it用作形式主语
1.基本用法
当不定式、动名词、从句等复杂成分用作句子主语时，为保持句子平衡，通常把真正的主语放在句末，而在句首使用形式主语it。如：
It’s very important to remember this.
It’s no use speakingtoo much without action.
It’s unknown when he will come.
二、it用作形式宾语
1.基本用法
当不定式、动名词、从句等复杂成分用作宾语且其后跟有宾语补足语时，通常会在宾语补足语前使用形式宾语，而将真正的宾语移至句末。其基本结构为“动词+it+宾补+不定式/动名词/从句”。如：
I find it difficult to do the job well.
We think it no use complaining.
I think it best that you should stay here.
三．It其它用法
2. 其它某些句型或搭配
1. It doesn’t matter…没关系
It doesn’t matter what he says. 他说什么都没关系。
2. It appears/ seems/ happens/says that/as if/as though…
It happened that I had no money with me. 碰巧我当时没有带钱。
It seemed as though he didn’t recognize me.他似乎没认出我来。
3. It is said/ reported/ believed/ understood /considered that…
It is said that he has joined the Party. 据说他已经入党了。
4. It is a waste of time /money doing sth.
It’s a waste of time your talking to him. 你和他谈是浪费时间。
5. (It is) no wonder( that) …
It’s no wonder he is not hungry; he has been eating sweets all day. 难怪他不饿，他整天在吃糖果。
6. It makes no/much difference…
It’s doesn’t make much difference my being there. 我在不在那儿没有什么影响。
7. it takes sb. some time to do sth.
It took me nearly an hour to work out the problem. 花了我差不多一个钟才做出那道题.
8. It’s one’s turn to do sth.
It’s my turn to clean the classroom. 是轮到我打扫教室的了。
9. If it were not for…/If it hadn’t been for…若不是因为……
If it were not for your help, I would still be homeless. 若不是你帮忙，我现在还是无家可归。
10:It never occurred to sb that +句子
It neverd occurred to me that they performed so well.
11.It is convenient to/for sb
If it is convenient to you, please give me a hand tomorrow afternoon.
[if !supportLists]12. [endif]make it a rule ...
You need to make it a rule that these flowers should be watered once a week.
13.Itis/was the first /second...time + that+从句(现完/过完）.
It’s the first time that I have enjoyed such a delicious meal.
14. It is / has been +时间段 + since-从句. 自从……有一段时间了。
It is three years since the school was built and how time flies!
15.It was / will be +时间段 + before-从句. 过多久时间才……
It will be half a year before you graduate from this university.
16.It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式，有时也用“should+动词原形”)
It’s time that he finish the task as there is little time left now.
17.when it comes to...
When it comes to my choice, the top priority should be given to playing the piano.
18. It is up to sb to do sth.
It’s up to you to to make the choice.
19.Take it for granted that...
I took it for granted that he would help us.我认为他会帮助我们的。
20.Think/consider/find/feel+it+adj + to do sth
Many people think it difficult to be successful.
21.Make it +adj+for sb to do sth
The author has tried his best to make it easier for readers to understand what he writes.
22.As it is照原样
Leave the table as it is.
23.That’s it. 到此为止
You can have one more sweet and that’s it.
24. It all depends
I have no idea whether he will succeed and it all depends.
25. Take it easy
Take it easy and it’s not as difficult as you imagine.
26. Make it 成功，做到
The man worked hard for a long time and he finally made it.
27. Believe it or not
Believe it or not , there is going to be a heavy rain this afternoon.
28. it is no good/ no use doing sth
It is no good staying up too late at night.
29. It is the same with...
Tom is very kind and can get on well with others.It is the same with his brother.
30. It is /was +强+that/who +剩
It was the failure that made him realize his shortcomings.
