定语从句就是修饰【名词】的句子。I have a carpet which can fly 我有一张可以飞的地毯。【物】【which】可用that he is a boy who can lift this stone .他是个能举起这石头的男孩。【人】【who】 可用that其中【who can lift this stone】就叫定语从句,修饰名词【boy】的句子。who在这里就不用翻译,你直接看做he is a boy ,【他是个男孩】he can lift this stone【他能举起这石头】。合起来念就是了。当然有很多,人就用who ,物就用which,人和物一起就用that ,that在很多情况可以用,你记住这些就行了。还...