定语从句在复合句中修饰名词和代词的从句叫做定语从句
被定语从句修饰的名词或代词叫做先行词
引导定语从句的关系代词有who,whose,whom,which,that,as;引导定语从句的关系副词有when,where,why;关系代词在定语从句中做主语,宾语,定语
关系副词在定语从句中做状语
由who,引导的定语从句,who在从句中做主语(口语中也可做宾语),修饰表示人的先行词
例如:Thisisthemanwhohelpedme
Doyouknowthecomradewhospokejustnow
Theboywho//whomwesawyesterdayisJohn’sbrother
whom引导的定语从句,whom在从句中作宾语,修饰表示人的先行词,口语中可以省略
Thedoctor(whom)youarelookingforisintheroom
Theperson(whom)youjusttalkedtoisMr
=ThepersontowhomyoujusttalkedisMr
(介词后whom不能省略)Thebabieswhomthenursesarelookingforareveryhealthy
(固定短语中的介词一般不省略,介词仍放在动词之后)三
whose引导的定语从句,whose在从句中作定语,修饰表示人或物的先行词
DoyouknowthewomanwhosenameisMary
Passmethedictionarywhosecoverisblack
that引导的定语从句,that在从句中做主语或宾语,修饰表示人或物的先行词,作宾语时可省略,不能放在介词后面作宾语
Theletter(that//which)Ireceivedwasfrommyfather
Ican’tfindtheletterthat//whichca