• 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．
…..
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---
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．
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．
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.
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---
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 Octobe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 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---
据说，日本发生了地震。 It is said that there has been an earthquake in 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’ 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…