主语从句引导词 what which that 的区别?

what引导主语从句和which引导的主语从句有什么区别 引导从句时 what which 和 that 的区别 what,which,that等引导从句的区别 whose,whom,who,what,which,that.引导从句的区别 which和that引导从句的区别 what which 引导表语从句的区别, 引导词where which what that在从句的位置? 请问定语从句引导词that和which的区别 that引导的主语从句 which what whose where that whom 等引导的从句怎么区别啊` 宾语从句引导词what和that的区别 what which that三个词有什么区别,能引导啥从句