一 定语：修饰名词或代词的词、短语或从句称为定语。汉语中常用‘……的’表示。 定语主要由形容词担任。此外名词、代词、数词、副词、介词短语以及动词不定式（短语）、分词也可以做定语。a beautiful city; a bag full of money.注意：汉语的定语无论多长都放在被修饰词的前面，而英语中的定语则不然，是一个词时，放在被修饰词的前面， 若是两个以上的词组、短语或从句则放在被修饰词的后面，thirty women teachers ; his father; the girl in red. the boy from America Our monitor is always the first student to enter the classroom. falling leaves; fallen leaves; the boy playing basketball; the book bought by my mother; a reading room; a swimming poolHe is the man who you are looking for. 二：定义及相关术语1．定语从句：修饰某一名词或代词的从句叫定语从句。定语从句一般紧跟在它所修饰的先行词之后。2．先行词：被定语从句修饰的名词或代词叫先行词。3．关系词：引导定语从句的词叫关系词。关系词有关系代词和关系副词。关系代词有that, which, who, whom, whose, as 等；关系副词有 when, where, why.1. I have an apple. An apple is red.I have an apple that/which is red. ↑ ↑先行词 关系代词 like some friends. Some friends like sports.I like friends who like sports. ↑ ↑先行词 关系代词 like music. The music is quiet. I like music that/which is quiet.↑ ↑先行词 关系代词关系词通常有下列三个作用：A、引导定语从句，连接主从句；B、代替先行词；C、在定语从句中担当一个成分。（二）关系代词引导的定语从句1．who 指人，在定语从句中作主语。The boys who are playing football are from Class One. Those who want to go to the museum must be at the school gate at 7 tomorrow morning. Yesterday I helped an old man who had lost his way. That is the teacher who teaches us physics. 2．whom 指人，在定语从句中做宾语，常可省略。Mr Liu is the person ( whom ) you talked about on the bus. Li Ming is just the boy ( whom ) I want to see. The professor ( whom...
