It的用法

It’ possible/important/necessary/clear… that…
…很可能/重要的是…/必要的是…/很清楚… It’ said/ reported… that..据说/据报道… It’s been announced/declared that..已经通 知/宣布… It seems/appears/happens.. that…显然、 明显、碰巧.. It’s no wonder that…并不奇怪/无疑…
据说，日本发生了地震。 It is said that there has been an earthquakeຫໍສະໝຸດ Baiduin Japan. Structure: It is said (reported, decided, suggested---) that---
2.由it引导的强调句结构： It is (was)+被强调部分+that (who) + 句子其他部分 注意：此结构强调的成分常限于主语， 宾语和状语。
It stands for a clause:
b. It’s amazing that at my age I am still fit enough to cycle 20 kilometres in an afternoon.
真正的主语 that at my age I am still fit enough to cycle 20 kilometres in an afternoon it形式主语 structure: it is+ adj. +that---
• 强调时间：It was yesterday
evening that my father did the
experiment in the lab．
• 强调地点：
It was in the lab that my father
did the experiment yesterday
evening．
I suppose it import to do more reading in grade two.
We guess it no use his crying over his wrong doings.
it 引导的固定句型 I hate/love/like/enjoy/appreciae it that....
It stands for date
这时是十月的一个晚上。
It was an evening in October.
It stands for-ing form
牛奶洒了，哭也无益。 It is no good crying over spilt milk. 真正的主语 crying over spilt milk it形式主语 structure: it is +n.+ doing---
Structure : It is no good (no use, great fun, a new experience---) doing---
It was in that city that we met for
the first time．
It was not until he told me that I
knew the truth．
3. 由it做形式宾语 而将真正的宾语放到补足语后
面；如动词think, believe, suppose, expect ， imagine，guess等后 structure: sb. think it +补 足语（adj.&noun)+ 真正的宾语(to do/dong/that 从句---) e.g. I thought it strange that he failed to call me．
…..
他居然还活着，真是个奇迹。 It is a wonder that he is still alive. Structure: It is a fact (a shame, a pity, no wonder---) that--碰巧，那年收成不好。 It happened that the harvest was bad that year. Structure: It seems (happened, doesn’t matter, has turned out---) that---
2.那样做是违法的。 It is against the law to do that. 真正的主语 to do that it形式主语 structure: it is+ prep.+ to do---
3.观看电影让我很高兴。 It gave me great pleasure to see the movie. 真正的主语to see the movie it形式主语 structure: it +v.+ to do---
It stands for time
c. It’s my birthday in two weeks time---
It stands for weather
a. It’s a beautiful day here---
It stands for distance
到市中心需要半小时。
It is half an hour’s walk to the city center.
如： 原句：My father did the experiment in the lab yesterday evening． 强调主语：It was my father who/that did
the experiment in the lab yesterday
evening．
• 强调宾语：It was the experiment that my father did in the lab yesterday evening．