Last night,I saw the man who/that/whom you mentioned was away.三个关系代词用哪个?为什么?
问题描述：
Last night,I saw the man who/that/whom you mentioned was away.三个关系代词用哪个?为什么?
答
who
who you mentioned做man的定语,从句确主语,所以应该用who来引导.