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1、1.Thatistheonlythingthatwecando.Thatistheonlything,wecandotheonlything.2.IlikemusicthatIcandanceto.↓Ilikemusic,Icandancetomusic.↓作宾语作宾语作宾语作宾语1.Iprefermusicthathasgreatlyrics.Iprefermusic,musichasgreatlyrics.↓作主语作主语1.Thatistheonlythingthatwecando.↓↓先行词引导词定语从句无词义(
2、作宾语)↓作定语从句宾语↓1.Iprefermusicthathasgreatlyrics.↓先行词作定语从句主语↓引导词无词义(作主语)↓定语从句↓一，定语从句的定义:修饰名词或代词的从句叫定语从句。被定语从句修饰的名词或代词叫先行词。定语从句一般放在先行词后面，定语从句包括限制性定语从句和非限制性定语从句.引导词（无词义）有：1.关系代词:who,which,that,whose,whom2.关系副词:where,when,why1.Thewomanwholivesnextdoorisateacher.(限制性定语
3、从句)1.Thewoman，wholivesnextdoor，isateacher.(非限制性定语从句)一，关系代词who,which,that,whose,whom在定语从句中的用法。1.who指人,在从句作主语或宾语Themanwhodidthebadthinghasbeencaught.→先行词就是引导词，引导词就是先行词，引导词无词义。3.that指事物，也可指人，在从句中作主语或宾语。作宾语时可省略。1).Aplaneisamachinethatcanfly.2）.Hereistheboy（that）Ipla
4、ywith.2.which指事物,在从句中作主语和宾语,作宾语时可省略Thechair（which）IsatinwasabrokenoneIprefermusicwhichhasgreatlyrics.4.whose既指人的,也指事物的,在句子中作定语。SheisthegirlwhoseEnglishisthebestinourclass.5.whom指人，在从句中作宾语，常可省略。Thewoman（whom/who）Iwantedtoseehadalreadyleft.注意区别:1.指物时用that不用which的情
5、况1).先行词是all,everything,anything,nothing,something,some,little,few,none,theone时eg.Weshoulddoallthatisusefultothepeople.2).先行词被all,every,no,some,any,little,much,few,none修饰时eg.Youcantakeanyseatthatisfree..3).先行词被theonly,thevery,thesame,thelast等修饰时eg.Thatistheonlyth
6、ingthatwecando.4).先行词是数词,序数词或被序数词修饰时eg.ThisisthefirstplacethatIwanttovisit.5).先行词是形容词最高级或被形容词最高级修饰时eg.ThisisthemostinterestingbookthatIhaveeverread.6).先行词由人、物的两个并列名词构成时eg.Wetalkedaboutthethingsandpersonsthatwewereinterestedin.7).先行词在句中做表语时,即先行词放在be动词之后时eg.Oursch
7、oolisnolongertheplacethatitusedtobe.8).主语以therebe开头时eg.ThereislittlethatIcando.9).当主语是以who,which或what开头的特别疑问句时eg.Whoisthatmanthatiswaitingatthebus.2.指物时用which不用that的情况1).当关系代词前使用介词时eg.ThisisthetrainbywhichwewenttoBeijing.2).引导非限制性定语从句时eg.Football,whichisaveryint
8、erestinggameisplayedallovertheworld.3).先性词本身是that,或句子中已经有了that时eg.WhatIwanttodoisthatwhichwillhelpusall.3.指人时用who不用that的情况:先行词是one,ones,those,anyone,he时eg.Thosewhowan
