the way 后面什么时候加which，有没有加in which的？若有in which 要符合什么条件？

way都是加in which阿
The way in which the crime was committed was absolutely vile.
There are different ways in which to address a member of the royal family.

如果the way后面是引导定语从句，如果way在这个定语从句中是做宾语，就用which/ that/不填，
若是做状语，就用in which/ that/不填。