It was yesterday that he met my brother in the Zoo.我知道这个是强调句,怎么把它变为表语从句?It was yesterday that he met my brother in the Zoo.我知道这个是强调句,那它为什么不是表语从句呢?如果把它变为表语从句,是不是把that变为when啊?亦或是只能用作强调句?

问题描述:

It was yesterday that he met my brother in the Zoo.我知道这个是强调句,怎么把它变为表语从句?
It was yesterday that he met my brother in the Zoo.我知道这个是强调句,那它为什么不是表语从句呢?如果把它变为表语从句,是不是把that变为when啊?亦或是只能用作强调句?