定语从句和强调句的区别

    

    

    

    强调句型的结构： It is/was (could be...) + 被强调的成分 + that ...

    强调的成分是主语、宾语和状语。强调句型可用“还原法”来判断，若删除强调句型结构后，句子能还原为一个完整的句子，就是强调句。

    

    It was at the school gate that I met Tom yesterday.

    It was the school gate where I met Tom yesterday.

    

    第一句是强调句，去掉强调句型结构后，句子可以还原成一个完整的句子。I met Tom yesterday at the school gate.而第二句不行，必须要加个介词at。