It is known to us how he became a writer.这句主语从句,那部分是主句,那部分是从句?怎样分辨?从哪里可以判断是主语从句?很抱歉没有悬赏分,恳求高人帮忙!什么情况下复合句用形式主语。

问题描述:

It is known to us how he became a writer.这句主语从句,那部分是主句,那部分是从句?怎样分辨?从哪里可以判断是主语从句?很抱歉没有悬赏分,恳求高人帮忙!
什么情况下复合句用形式主语。

这句是主语从句,it作形式主语,it is known to us 作主句,其余是从句,从句作真正的主语

形式主语,how后面是宾语

It is known to us 是主句,how he became a writer.是从句.
要辨别主句和从句有两种办法:
1.理解意思
2.从句是修饰前面的主句,从句是:疑问词+陈述句.(比如"how "就是疑问词,“he became a writer”就是陈述句) .剩下的理所当然的是主句.

how之后是从句,之前是主句
这是宾语从句这一块的知识点,由引导词how引导的宾语从句