定语从句中为什么有的介词不能前置??比如这两个句子:The family which I am staying with
定语从句中为什么有的介词不能前置??比如这两个句子:The family which I am staying with lives in town.如果说stay with是固定短语不能拆分,那么以下这个句子:The man with whom you talked just now is my neighbor.中的talk with就不是固定短语吗?为什么talk with可以拆??