请问it不能代替which作定语从句主语吗?什么时候可以用it＋谓语?谢谢

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/28 03:25:56

IT 代替主语从句时候,可以用IT +谓语
It +不及物动词+ that-分句
It appears that…似乎……
It happens that…碰巧……
It occurred to me that…我突然想起……
It occurred to me that I forgot to send this letter
It happened that I came into the office at that time.
it seems(appears / doesn’t matter / makes no difference / ...)that ...
例如:It makes no difference whether he will attend the meeting or not.他是否会参加会议都无关紧要.
当用it作形式主语,而将主语从句放在句尾时,主语从句中的否定词常要前移至主句中.例如:
It doesn’t seem that they are from the same university.It doesn’t appear that we’ll have a sunny day tomorrow.

定语从句中,逗号后面,什么时候是非限制性定语从句用which.什么时候用代词it that引导的主语从句用it作形式主语时,that什么时候可以省略,什么时候不可以? It代替主语从句作形式主语放于句首,而把主语从句置于句末.主语从句后面的谓语动词一般用单数还是复数? 主语从句用it作形式主语时,后面的that可以省略吗? 定语从句里面.什么时候which is 可以省略,是修饰主语的时候吗强调句与定语从句,主语从句是用it 作形式主语时,状语从句三个的区别? which在定语从句中作主语时可以省略吗定语从句中用which 可用介词+which 代替!但什么时候用in which 什么时候用at which 等介词+w 由特殊疑问词引导的主语从句以用it形式主语代替吗 which在定语从句中可以做主语吗? which可以在定语从句中当主语吗 matter作为不及物动词,当主语是句子时,常用it作形式主语代替从句