1、定语从句讲解王娱乐什么是定语从句呢？（一）定义：修饰前面某一名词或代词的从句叫定语从句。结构：先行词+关系词+句子Themanwholivesnexttousisapoliceman.先行词______________________关系词___定语从句关系词通常有下列三个作用：A、引导定语从句；B、代替先行词；C、在定语从句中担当一个成分。例如：The man who is shaking hands with my father is a policeman.该句中，who is shaking hands with my father是定语从句，修饰先行词the man
2、， “who”是引导定语从句的关系词，代替先行词the man，在定语从句中作主语。关系词关系代词:that,which,who,whom,whose关系副词:when,where,why关系代词：指物：thatwhich指人：who(主/宾格)thatwhom（宾格）(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。who作主语.(不能省)Thisisthefilmstar.ThefilmstarisverypopularinChina.ThisisthefilmstarwhoisverypopularinChina.(作主语)Yesterday I he
3、lped 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。whom作宾语：(可省略)Themanisafamouswriter.Hedescribedthemanjustnow.Theman(whom)hedescribedjustnowisafamouswriter.(作宾语）Mr. Liu is the person (whom ) you talked about on the bus.Li Ming is just t
4、he boy (whom ) I want to see.The professor (whom ) you are waiting for has come.3．Which 指物，在定语从句中做主语或宾语，做宾语时常可省略。Thisisadream.Thedreamwillnevercometrue.Thisisadreamwhichwillnevercometrue.Thedoghasbeenfound.Thedogwaslost.Thedogwhichwaslosthasbeenfound.which作主语.(不能省)（作主语）which作宾语：（可省略）Thisisth
5、ecard.I’vejustreceivedthecard.Thisisthecardwhich/thatI’vejustreceived.()（作宾语）Footballisagamewhichislikedbymostboys.This is the pen (which) he bought yesterday.4．That指人时，相当于who或whom；指物时，相当于which。在定语从句中作主语或宾语，作宾语时常可省略。Where is the man (that / whom) I saw this morning?The person (that /whom) yo
6、u introduced to me is very kind.The season that / which comes after spring is summer.5．Whose 通常指人，也可指物，在定语从句中做定语。whose作定语,表示所属关系。Theboyismyclassmate.Theboy’sfatherisapoliceman.Theboywhosefatherisapolicemanismyclassmate.I visited a scientist whose name is known all over the country.He has a
7、friend whose father is a doctor.I once lived in the house whose roof has fallen in.小结：that－既可指人，也可指物，作主语，不能省略；作宾语，可以省略。which－指物，作主语，不能省略；作宾语，可以省略.who－指人，作主语，不能省略；作宾语，可以省略,（常用whom）注:当关系代词在定语从句中作主语时,定语从句的谓语动词形式由先行词定。★只用that,不用which,常见的情况有5种：当先行词是all,
