about which=where
看来得给你好好解释一下
定语从句可不可以用where关键看先行词是否在从句中作地点状语
这句话先行词是book 还原回去there is so much controversy about the book
是在作状语所以about where=where
再如
this is the factory in which my father works
等于
this is the factory where my father works