M6Grammar1.定义：又称形容词性从句，在复合句中修饰名词或代词，起定语作用。2.先行词：被定语从句修饰的名词或代词。3.关系代词\关系副词：引导定语从句的词。关系代词关系副词who,whom,whose,which,thatwhen,where,why在定语从句中作主语、宾语、定语在定语从句中作状语一：定语从句(AttributiveClauses)Adictionaryisabookwhichgivesthemeaningofwords.句子主干：定语从句：先行词：关系代词：Adictionaryisabook.whichgivesthemeaningofwordsbookwhich4.分类：限定性定语从句与非限定性定语从句限定性定语从句是句中不可缺少的组成部分，使先行词区别于同类其他事物；主句和从句之间不用逗号隔开。非限定性定语从句是对主句先行词的补充说明，没有这种从句不影响主句意思完整。一般用逗号把主句和从句分开。引导词：关系代词和关系副词，作宾语时一些关系代词可以省略。引导词：as,who,whom,whose,which,ofwhich,when,where等，不用that或why,不能省略。1.who指人，作主语或宾语(作宾语可省略）Apersonwhostealsthingsiscalledathief.2.whom指人，作宾语(作宾语可省略，如介词提前则不能省)Theman(whom/who)ItalkedtoisMr.Li.ThemantowhomItalkedisMr.Li.3.whose在定语从句中作定语，与后面的名词为所属关系。whose多指人，也可指物，指物时可与ofwhich互换使用。1.Hehasafriendwhosefatherisadoctor.2.Theclassroomwhosedoorisbrokenwillsoonberepaired.=Theclassroomthedoorofwhichisbrokenwillsoonberepaired.4.which指物，在定语从句中做主语或宾语，做宾语时常可省略。Helikestoreadbookswhicharewrittenbyforeignwriters.Thisisthepen(which)heboughtyesterday.5.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。Whereisthemanthat/whomIsawthismorning?Theseasonthat/whichcomesafterspringissummer.1)限制性定语从句中先行词为all,everything,anything,nothing,none,few,little,some等不定代词指物时。(something用that或which均可)Thereseemstobenothingthatisimpossibletohimintheworld.that和which在指物的情况下一般都可以互换，但在下列情况下，一般用that而不用which。(2)Therebe句型中用that。ThereisabookonthedeskthatbelongstoTom.(3)先行词被序数词或最高级修饰。Thisisthefirstbook(that)hehasread.Thisisthebestfilm(that)Ihaveeverseen.(4)先行词是who或which引导的主句。Whoisthegirlthatdrovethecar?WhichistheT-shirtthatfitsmemost?(5)当先行词既有人又有物。Theytalkedaboutthepersonsandthingsthattheyrememberedatschool.(6)先行词被all,every,no,some,any,little,much,theonly,thevery,thelast,just,right等修饰。Thisistheverybookthatbelongstohim.(1)紧跟介词作宾语Therearemanytreesunderwhichtheycanhavearest.(2)在非限制性定语从句中（下节课重点介绍）Football,whichisaverypopulargame,isplayedallovertheworld.(3)作定语Hemaybelate,inwhichcase,weshouldwaitforhim.一般用which而不用that的情况。一般用which而不用that的情况。when在定语从句中作时间状语，先行词往往是表示时间的名词。相当于介词+which。若定语从句缺主语或宾语，需用which或that引导定语从句。I’llneverforgetthedaywhenIjoinedtheleague.I’llneverforgetthetimewhich/thatwasspentwithyou.onwhichwhere在定语从句中作地点状语，先行词往往是表示地点的名词。相当于“介词+which”。若定语从句缺主语或宾语，用which或that引导定语从句。ThisisthehousewhereIlivedtwoyearsago.Thelibrary(which/that)youvisitedyesterdaywasbuiltin1990.inwhichwhere引导的定语从句也可以修饰case,condition,situation,instance等先行词。Canyouthinkofasituationwherethiswordcanbeused?why在定语从句中作原因状语，常位于reason之后，相当于forwhich。Thereasonwhy/forwhichherefusedtheinvitationisquiteclear.thereasonwhy…isthat………的原因是……Thereasonwhyheresignedwasthathequarreledwithhisboss.1.在thereaso...
