学习必备欢迎下载定语从句定语从句在句中相当于一个形容词，起定语的作用，修饰说明名词、代词或主语的全部内容。通常在被修饰的词语（即先行词）之后，由“关系词”引导。定语从句的三种功能：1. 连接功能：连接从句，引导一个定语从句2. 指代功能：指代先行词3. 语法功能：在定语从句中充当句子成分( 定语从句中的关系词分为关系代词和关系副词两种) that which who whom whose when where why 主语宾语定语表语指人who that whom that whose that 指物which that which that whose that 注: 关系代词在句中充当主语、宾语，因此定语从句中不能再出现关系代词所替代的名词或代词。关系代词在从句中作主语时不能省略① A plane is a machine which / that can fly . (作主语 ) The dog which / that was lost has been found . (作主语 ) ② The number of people who / that lost homes reached 250,000 . Here comes the girl who / that wants to see you . 关系代词在句中作宾语时可省略① The noodles that / which I cooked were delicious .（作宾语） This is the book that / which I want to read . The letter that / which I received yesterday was from my father . ② The girl who / that we saw yesterday is Mary . Mr Li is a man whom / who / that we should lear from . Do you know the man whom / who / that is talking to ? 关系代词在从句中做定语① The novel whose cover was broken blongs to me . ② Henery is the boy whose mother is our English teacher . I know the person whose company produces computers . This is the person whose story surprised everybody . 关系代词在句中作表语时可省略（只能用that ）She is not the girl that she was . 定语从句中关系代词与关系副词的选择明确关系代词，关系副词在定语从句中的不同作用关系代词 which , that , who在定语从句中作主语或在及物动词或介词后作宾语关系副词 when , where, why在定语从句中作状语，即定语从句中不缺主语、宾语，只缺时间、地点或原因状语分析句子结构，明确句法成分语法关系词指代学习必备欢迎下...
