英语中介词+Which=what when where who等谁列举一下

问题描述:

英语中介词+Which=what when where who等谁列举一下

在从句中
at which time = when
in which place= where
who和which用法相似,不过who指人,which指物,并且which可能有指代整句话的用法.
至于what一般是主语和宾语从句中使用.那why呢?从句中why作为关系副词,经常这样用:That‘s why i come back.