能不能简单明了的讲一下状语从句、宾语从句、定语从句的区别,有点搞不懂.是和先行词有关吗”

举三个例子:I don't know when he will come。I can't remember the time when I played with my classmates。I was doing my homework when the door bell rang。你看下三个句子分别是什么句子宾语从句放在动词后面,定语从句放在名词后面,剩下的是状语从句 再问： 这是我见过最简洁的例子，很符合我的题意，谢谢