十一名词性从句
语法精讲一．主语从句
主语从句是在复合句中充当主语的从句，通常放在主句谓语动词之前或由形式主语it代替，而本身放在句子末尾。
It doesn’t interest me whether you succeed or not.
It is in the morning that the murder took place.
It is John that broke the window.
1. 用it 作形式主语的结构
(1) It is ＋名词＋从句
It is a fact that the earth is round.
It is an honor that many specialists came to our English class.
It is common knowledge that you say “ hello ”to your teacher when you first meet her at school.
It is a rule that we should come to class before 8 c’clock.
(2) it is ＋形容词＋从句
It is natural that he can’t speak excellent Chinese, as he is an Australian.
It is strange that she came to school late this morning.
