宾语从句中which和what,who的区别

问题描述:

宾语从句中which和what,who的区别
Jim feels stressed from time to time,but he does not know ( )about it.
A who to talk.B which to talk to.C whom to talk.D who to talk to.
我对宾语从句没什么概念,老搞不清which,what,who这些先行词的区别,这条选什么

C为正解
因为he does not know 后面应该接宾语 先行词是宾语人的时候用whom
which用在宾语从句中 指代物或事 what不能用在宾语从句中 状语从句可以使用
who用在状语从句中指代人