Question

主语从句与定语从句中when where why 的用法有何不同？

Answer 1

引导主语从句的when, where, why作用有二:1，引起主语从句；2，在主语从句中做状语。例如：When you went there was known to us all.

引导定语从句的when, where ,why叫做关系副词,它们一定跟在一个名词的后面,并代替这个名词在定语从句中作状语。例如: This is the house where Lu Xun once lived.