文档介绍：it的用法及强调句型
用one,ones,it,that,those填空
(1) — I can't find my watch.
— You haven't found ______? If you want to buy a new ______, I suggest you buy ______ made in China.
(2) We've got a big cup and two small ______.
(3) The weight of an elephant is much greater than ______ of a tiger.
(4) The books on the first shelf are easier than ______ on the second shelf.
(5) The boy told his story and ______ of the girl upstairs.
— Someone is knocking at the door. Who is it?
— It must be Leo. He said he'e to see me.
It's too quiet in the room. Everyone just keeps silent.
根据语境补全句子
(6)— What time is it now?
— half past seven.
(7)— spring now and it's warm these days.
【注意】 it指代时间时,有如下一些句型:
(1) It is time for sth. (for sb.)to do sth. / that-从句(should do / did, 必须用虚拟语气)
例: ① It's time for lunch.
② It's time for us to clean the house.
③ It's time that we should clean the house.
=It's time that we cleaned the house.
(2) It is / has been + some time + since-从句(从句用一般过去时)
(3) It / This is the first / second…time that-从句(必须使用现在完成时)
这是某人第……次做了某事。
It / That was the first / second…time that-从句(必须使用过去完成时)
例:①It is the second time that she has visited the Great Wall.
②This was the first time that I e late to school.
(4) It was +时间点+ when -从句
例: It was evening when we got home.
=It was evening in which we got home.
(5) It was / will be + some time + before -从句
二、it作形式主语
(8) is