The Attributive ClauseWhich one is Harry Porter ?The boy is Harry Porter Which one is Harry Porter ?The boy _ is Harry Porter .who is wearing glasses定语从句一、概念: 在复合句中修饰名词或代词的句子. ( 在句子中作定语) (Attributive clause)Harry Porter is a smart boy.Harry Porter is a boy who has magic power.形容词作定语句子作定语,修饰boy, 叫做定语从句Harry Porter is a boy who has magic power.先行词 关系词定语从句关系代词 关系副词which, who, whom, whose, thatwhere, when,why二、用法:These are the trees which / that were planted last year.先行词是人关系代词: who whom whose that