It seems / happended that...句式分析(句尾的从句可以移到句首吗)

问题描述

It seems that John's not coming after all. 

It happened that John was the only witness.

以上两句中的 that 从句是什么从句? 可以移到句首吗？谢谢老师的解答。

老师答疑

曹老师：

It seems that John's not coming after all. 

It happened that John was the only witness.

第一句有两种解释。1 seem是系词，that从句是表语从句。it指“情况”（即说话人要说明的情况）。2 seem是不及物动词，it为形式主语，that从句是真正主语从句。

第二句的it是形式主语，happened是vi,that从句为真正主语从句。

以上两句都不可以将that从句移至句首。

W老师：

that 引导的是主语从句。但这样从句永远放在句末，不可放在句首。

属这种性质的句子，除你提到的两个句式，还有 It appears that...

It appears that he is living in the area. 他似乎就住在这一带。

It appears that he has been waiting a long time. 看来他已经等了很久了。

It appears that he forgot to sign the letter. 他似乎忘记在信上署名了。