我就讲通俗一点
定语从句前面必须有个名词和代词 比如 t never foget the place where i was born
状语从句修饰某个动词或者整个句子 he puts the key where his wife can not find it
宾语从句你只要看它是不是放在动词或者介词 或者情感类形容词后面 he forgot where he met the woman for the first time