内容正文:
定语从句
定语从句:一个句子跟在一个名词或代词后,对这个名词(代词)进行修饰限定的句子就叫定语从句,被修饰的名词或代词叫先行词,引导定语从句的词叫关系词;定语从句结构=先行词+关系词+从句
关系词的种类
关系代词:who,whom,which,that,在从句中可作主语或宾语
例:The book that I bought yesterday was written by Lu Xun. (我昨天买的那本书是鲁迅写的)
表所属的关系代词:whose,译为“……的”在从句中作定语
例1: Do you know the girl whose skirt is white?(你知道那个穿白色裙子的女孩吗?)
例2:Did you read the book whose cover is red? (你读过红色封面的那本书吗?)
关系副词:why=for which,where=in/ at/ on which,when=during/ on/ in which,在从句中作状语
when指时间,在定语从句中做时间状语
(1) I still remember the day when I first came to the school.
(2) The time when we got together finally came.
where指地点,在定语从句中做地点状语
(1) Shanghai is the city where I was born.
(2) The house where I lived ten years ago has been pulled down.
why指原因,在定语从句中做原因状语
(1) Please tell me the reason why you missed the plane.
(2) I don’t know the reason why he looks unhappy today.
注意:关系副词引导的从句可以由“介词+关系代词”引导的从句替换
(1) The reason why/ for which he refused the invitation is not clear,
(2) From the year when/in which he was going to school he began to know what he wanted when he grew up.
(3) Great changes have taken place in the city in which./where I was born.
关系词在句中作用有3种:
· 连接作用,连接主句和定语从句
· 指代前面的先行词
· 在定语从句中担当成分
关系词的选择
定语从句会不会用,关键在于选对关系词,关系词的选择要依据2种情况来定:
1. 看先行词(被定语从句修饰的词)
先行词是“物”可能用which,that,whose,where,when,why等
先行词是“人”可能用who,whom,that,whose等
2. 看关系词在定语从句中所担任的句子成分
① 先行词是人且关系词在从句中作主语,用who/that
He is a man who never breaks his word. 他是个从不食言的人
② 先行词是人且关系词在从句中作宾语,用whom/that
He is such a man (that) no one likes.他是一个不受欢迎的人
③ 先行词是物且关系词在定语从句中作主语,用that,which.
The dog that/ which won the race is John’s. 比赛获胜的那头狗是约翰的
④ 先行词是物且关系词在从句中作宾语,用that,which,也可以省略
The letter(that /which) I received yesterday was from my brother.我昨天收到的那封信是我兄弟寄来的。
记住:关系代词作宾语或表语是可以省略的,作主语是不能省略的,因为主语后直接是动词,省略的话就出现先行词直接接从句动词的语法错误。举例:Is there anything that you want to say? 中的that就可以省略。而He is the headmaster of this school who also teaches Chemistry. 中的who就不能省略。
⑤ 先行词是“人”或“物”,关系词在从句中作定语表所属关系,用whose引导定语从句
例:That is a book whose cover is blue.那是一本封面是蓝色的书.(先行词是“物”book,所属关系