1.The man is a worker.2.The man is speaking at the meeting.合并句子: The man who is speaking at the meeting is a worker. 概念:在复合句中修饰名词或代词 的句子. (Attributive clause)Mary is a beautiful girl.Mary is a girl who has long hair.形容词作定语句子作定语,修饰girl, 叫做定语从句Mary is a girl.Mary has long hair.合并为一个句子Mary is a girl who has long hair.先行词关系词定语从句Mary is a girl who has long hair.关系代词关系副词which, thatwho, whom, whose Where, when 定语从句的用法: 当先行词是物时, 用which 或that引导.These are the trees which were planted last year. 当先行词是人时, 用
