ask a question of grammar?the one which/that / who begins to talk is nervous.which \that and who which is correct?and why?

问题描述:

ask a question of grammar?
the one which/that / who begins to talk is nervous.which \that and who which is correct?
and why?

the one who begins to talk is nervous.which is correct?

"who"
who引导了一个定语从句,其修饰限定了“the one”即开始讲话的人,因为修饰的是人,而且又作为定语从句中的主语,所以用who