Who that has experienced so much will do that?的句法成分

问题描述:

Who that has experienced so much will do that?的句法成分
里面的that,为什么不能是who
好像说的不是很清楚...我主要是想问第一个that在里面起什么作用,为什么不能是who...

这是个含有定语从句的特殊疑问句.句子的主体是“Who will do that?”而that has experienced so much 是定语从句,修饰who的.先行词who,关系代词that.当who做先行词时,尽管指人,但为了避免重复,关系代词用that.
【俊狼猎英】团队为您解答.祝你进步!