that/who/whom在定于从句中有什么区别?

我帮你简单地归纳下,who,whom,that 这些词代替的先行词是人的名词或代词,在从句中所起作用如下：Is he the man who/that wants to see you?（who/that在从句中作主语） He is the man whom/ that I saw yesterday.（whom/that在从句中作宾语） 就是说who和whom 的区别在于 他在句子中的成分(主语或宾语） that 又区别于who,whom,因为他还可以指物,而who,whom,只能指人 The house that I’m going to buy faces south.