of whom 在句中干什么成分

So, the CSI for the police is the group of police officers who go inand try to collect what we would call "evidence" – some sort ofphysical proof of whom may have committed this crime.

取自“2005 English Cafe 11”。

请问of whom后面是定语从句吗，句中的主语是什么？

So, the CSI forthe police is the group of police officers who go in and try to collect what wewould call "evidence" – some sort of physical proof of whom may havecommitted this crime.

这里没定语从句。

of whom may havecommitted this crime 是 proof 的定语，of 是 about 之意，证据是关于 “哪个有这个罪行” 的。不过，此处宾格 whom 用错，改为主格 who，由于它充当名词性从句的主语。

whomay have committed this crime  是of 的宾语从句。