Do you know the young lady____your mother is talking
问题描述：
Do you know the young lady____your mother is talking
这里为什么用with whom
答
with whom
定语从句,先行词为the young lady,
定语从句,就是两句句子,我们现在把定语从句还原,
就是,your mother is talking with the young lady.
talk with 是固定搭配,与某人交谈,
定语从句中,介词不可以省略的哦