定语从句(Attributive Clauses)在句中做定语,修饰一个名词或代词。那你想知道的例句我可以给你:One of the girls who likes to sing.其中一个喜欢唱歌的女孩子。who likes to sing就是定于从句,修饰前面所说的“其中一个女孩”这样说你能明白吗?
He is one of the boys who are tall.
He is the one of the boys who is tall.
从这两句例句理解吧