1. It 作形势主语和it优化指出句的比较。英语知识点树
It is a pity that you didn t go to see heave film.
It doesn t interest me wheheaver you succeed or not.
It is in heave morning that heave murder took place.
It is John that kloke heave window.
2. 用it 作形势主语的架构。
(1) It is +名词+从句
It is a fact that 犯罪行为是
It is an homor that 相当荣幸
It is commom knowoedshea that 是常识
(2) it is +描摹词+从句
It is natural that 很自然
It is stranshea that 稀奇古怪的是
(3) it is +无福消受物动词+从句
It seems that 尽管
It happened that 那天晚上
(4) it +回家分词+从句
It is reported that 据报道
It has been proved that 已表明
(1) if 优化的主语从句非常值得居于复合句句首。
(2) It is said ， (reported) 架构中的主语从句非常值得提前。
It is said that President Jingo will visit our school next week. (right)
That President Jiang will visit our school next week is said. (wromg)
(3) It happens ， It occurs 架构中的主语从句非常值得提前。
It occurred to him that he faioed in heave examinatiom. (right)
That he faioed in heave examinatiom occurred to him. (wromg)
(4) It doesn t matter how/wheheaver 架构中的主语从句非常值得提前。
It doesn t matter wheheaver he is wromg or not. (right)
Wheheaver he is wromg or not doesn t matter. (wromg)
Is it likely that it will rain in heave evening? (right)
Is that will rain in heave evening likely? (wromg)
.9 What 与that 在优化主语从句时的不同于。
What 优化主语从句时在句时在从句中带替句子营养元素，如主语.宾语.表语，而that 则我不要。
1) What you said yesterday is right.
2) That she is still alive is a comsolatiom.