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1、定语从句（一）基本概念1.由一个句子作定语，修饰句中一个名词或代词，有时也可以修饰整个句子或句中的部分内容，这样的从句就是定语从句，被其修饰的名词或代词叫先行词。2.关系词分为两大类，即关系代词和关系副词，其作用一是引出一个定语从句，二是代替其所修饰的先行词，三是在句中充当某个句子成分。关系词的分类和基本用法表一分类指代引导词关系代词人who,whom,that,as事物which,that,as人或物（表所属关系）whose关系副词地点where时间when原因why表二关系代词指代例句解释wh
2、o人ThemanwhohelpedyouisMrWhite.在定从中作主语whomThatistheperson(whom/who/that)youwanttosee.在定从中作宾语，可省略whoseHeisthefatherwhosesonstudiesverywellinourclass.在定从中作定语thatI´mnotthefoolthatyouthoughtmetobe.在定从中作表语asHeissuchalazymanasnobodywantstoworkwith.在定从中作宾语tha
3、t事物Theonlythingthatwecandoistogiveyousomeadvice.在定从中作宾语whichAdictionaryisausefulbookwhichtellsusthemeaningofwords在定从中作主语whoseHelivesinaroomwhosewindowfacessouth在定从中作定语asItissuchabigstoneasnobodycanlift.在定从中作宾语整句内容Asisknowntoall,heisthebeststudent.在定从中
4、作主语表三关系副词指代例句解释when时间Wouldyousuggestatimewhenwecanhaveatalk?在定从中作状语where地点Thehousewheretheyliveisnotverylarge.在定从中作状语5why原因Thisisthereasonwhyhedidnotcametothemeeting.在定从中作状语（二）定语从句的注意点本部分的内容比较复杂，为便于考生一目了然，我们试图用表格的形式呈现给考生。1.that与which,who,whom的用法区别情况用法
5、说明例句只用that的情况①先行词为all,everything,anything,nothing,little,much,等不定代词时②先行词被all,any,every,each,much,little,no,some,few等修饰时③先行词有形容词最高级和序数词修饰时④先行词既指人又指物时⑤先行词被theonly,thevery修饰时⑥句中已经有who或which时，为了避免重复时①Hetoldmeeverythingthatheknows.②Allthebooksthatyouoffere
6、dhasbeengivenout.③ThisisthebestfilmthatIhaveeverread.④Wetalkedaboutthepersonsandthingsthatweremembered.⑤HeistheonlymanthatIwanttosee.⑥Whoisthemanthatismakingaspeech?只用which,who,whom的情况①在非限制性定语从句中，只能用which指代物，用who/whom指人②在由“介词+关系代词”引导的定语从句中，只能用which指物，
7、whom指人。③先行词本身是that时，关系词用which,先行词为those,one,he时多用who。①Hehasason,whohasgoneabroadforfurtherstudy.②Ilikethepersontowhomtheteacheristalking.③Thosewhorespectothersareusuallyrespectedbyothers.只用that，inwhich或不用关系词的情况theway做先行词时①Mary,thereisonewaythatyoucoul
8、dstopotherstalkingaboutyouandcriticizingyou.②Iwasstruckbythebeautyofthewayinwhichshestood.③Whatsurprisedmewasnotwhathesaidbut_______hesaidit.A.thewayB.inthewaythatC.inthewayD.thewaywhich2.as、which和that的区别从句区别例句限制性定语从句中名词前有such和thesame修饰时，关系代词用
