定语从句[1]课件.ppt

Heisthetallestboyinhisclass.Theapplesherearebigandsweet.定语从句1.修饰名词或代词或整个句子2.定语从句的作用相当于形容词4.关系代词和关系副词叫做从句的引导词a.联系定语从句和先行词b.充当定语从句的一个句子成分5.从句引导词:关系代词who,whom,whose,which,that,as,关系副词when,wherewhy６．定语从句必须跟在先行词后面.as从句例外who指人,是主格,在从句中作主语介词可以放在whom前面,这时whom不可省略,who不能做介词宾语which/that指物,在定语从句中作主语或宾语,作宾语时可以被省略只能用that时2.OnlyMr.Whitecouldunderstandall(that)shesaid.7.当先行词被theonly,thevery,thesame,thelast修饰时As在从句中作主语或宾语用法二:1.as从句与主句用逗号分开,指整个主句或主句的一部分,解释“这一点，这件事…”2.位于句首、句中、句尾,3.as作从句的主语,宾语或表语常见as从句还有:when表示时间,在从句中做时间状语Hewillneverforgettheday.OnthatdayhejoinedtheLeague.TheprofessorcamebacktoChinain1949.Themainlandhadjustbeenliberatedintheyear.注意区别:Where表示地点，在定语从句中做地点状语这就是他出生的地方。在我们居住的城市里发生了巨大的变化。昨天我在上次我们见面的那个图书馆里看到了我们的班主任.注意:where可以用介词+which来表示小结Why表示原因，做原因状语先行词只有一个reasonwhichwhen和why在口语中可以省略,where不可以省略非限制性定语从句非限制性定语从句的先行词多为专有名词或独一无二非限制性定语从句练习限制性与非限制性定语从句用法区别Thehillsideswerecoveredwithtreesofredandorange,whichextendedasfarastheeyescouldsee.改错As的正确理解Isthereanything____Icandoforyou?Thisisthetallestbuilding_____Ihaveeverseen.Whichisthebook_____youboughtlastweek?Whoistheman______wecandependon?Thestudentabout______youaretalkingisgoodatmaths.Hedidn’tfindthebottle______coverwasred.Hetoldthemall_________hehadexperiencedinAfrica.Languageisatoolbymeansof_____peoplecommunicatewitheachother.Sheisthesamewoman_______youtalkedaboutyesterday.Heisnotsuchaman_____willleavehisworkhalfdone.Alibraryisaplacein_____alargecollectionofbooksarekeptforreadingorreference.Thedoctortriedusingantibiotics,_____oftencureinfectionfollowinganoperation.Heboughtapaw-pawfruitfromabiggrocerystoreinLondon,_____sellsallkindsofexoticfood.Adrugcalleddigitalis,_____isstillusedfortreatingheartdiseases,originatesfromawildplants.I’llneverforgettheday_____IwasadmittedintotheParty.Hedidn’tknowthereason_____theremedyworkedsofast.Therearethreemainways_____infectionsspreads.Thisistheway_____thehumanbodyworks.Itwasameeting_____importanceIdidnotrealizeatthetime.Myfather,_____hadbeenonavisittoAmerica,returnedyesterday.11.He’swrittenaboo