定语从句中引导词只要在从句中的成分是宾语就可以省略么？大神们帮帮忙

Question

无论是关系代词还是关系副词都适用么？？

Answer 1

不是. 如果做介词宾语并且介词在前.不可省略 Do you know the man with whom my mother is talking?(不可以) Do you know the man whom my mother is talking with ?(whom可以省略)

Answer 2

只是关系代词啊，关系副词在从句中做状语怎么做宾语呢。要是介词在关系词的前面一般不可以如This is the room in (which) he lived last year.