如：1) The man who lives next to us is a policeman.
2) You must do everything that I do.
引导定语从句的词有关系代词that, which, who(宾格whom, 所有格whose)和关系副词where, when、why
1、引导定语从句 2、代替先行词 3、在定语从句中担当一个成分
(1)The boys who are playing football are from Class One.
(2)Yesterday I helped an old man who lost his way.
(1) Mr. Liu is the person (whom) you talked about.
(3) The man who/whom you met just now is my friend.
(1) Football is a game which is liked by most boys. ( which 在句子中做主语)
(2) This is the pen (which) he bought yesterday. ( which 在句子中做宾语)
(5) The people that/who come to visit the city are all here. (在句子中做主语)
(6) Where is the man that/whom I saw this morning? (在句子中做宾语)