在定语从句中,whom在什么情况下要加with

在定语从句中,whom在什么情况下要加with
这要具体情况,在需要with搭配时用.
The woman with whom I went is my aunt.
跟我同行的那位妇人是我的姑妈.with whom是从I went with the woman来的.
The man with whom I spoke is a professor.
和我说话的那人是位教授. with whom是从I spoke with the man来的.
a person with whom you share a bed.
和你同住一张床的人. with whom是从you share a bed with the person来的.

当先行词是定语从句中with的宾语时eg.
I don't know the boy with whom you talked .