it is amazing that是什么从句

It is +形容词+that 是一个句型，that 引导主语从句，it作形式主语指代后面的that从句。

that后面接完整的句子，that在从句中不做任何成分，没有实际意义。

比如It is amazing that he came to ask help from me. 他居然向我求助，真太令人吃惊了。

It is amazing that that 是主语从句 it是形式主语

例如： It is amazing that he has passed the exam.主从复合句

It is amazing 是主句 it是形式主语

that he has passed the exam 是主语从句 (真正的主语）

以上句子可以改写成以下句子：

That he has passed the exam is amazing .

That he has passed the exam 主语从句作主语，

后面的谓语 is amazing 是连系动词+表语

that引导的是主语从句，it是形式主语。

标签：从句,amazing