在定语从句中怎样分清先行词做状语还是宾语?

题目

在定语从句中怎样分清先行词做状语还是宾语?
This is the rome where(状语）I stady.
This is the rome in which/that（宾语）I stady
我知道先行词做状语时只能用where ,而做宾语的时候可以用Which 或that
那么怎样分清,先行词到底做状语还是宾语呢?
如 I will never forget the day when (状语）I became a teacher
I will never forget the day which(宾语） I spend in Beijing
老师告诉我哪个是宾语哪个是状语的,如果自己判断就不会了.

答案

看先行词做什么成分就是看后面的定语从句缺少什么成分：如 I will never forget the day when (状语）I became a teacher后面的定语从句中I became a teacher 主谓宾都有了,那就肯定缺少个状语成分呗,那就选个时间状...