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1、关系代词关系副词介词+关系代词一定语从句基础知识回顾与整1.定语从句的根Recently,Ihavemadeanon-linefriend.Heisalawyer.Recently,Ihavemadeanon-linefriend,Whoisalawyer.判断正误：Infact，Ihavemademanyon-linefriends,twoofthemareAmerians.Jimpassedthedrivingtest,itsurprisedeverybodyintheoffice.whomwhich
2、2.定语从句的引导词(branches)⑴关系代词:先行词在定语从句中的成分指人指物指代人和物代指主句主语宾语定语/whosethat;whichwhich;aswhosethatwhowhom⑵介词+关系代词（which;whom;whose）⑶关系副词:when;where;why3.定语从句的类型(leaves)限制性定语从句非限制性定语从句（除that外）二考点透视 考点一：关系代词的选择链接高考题:1.Women________drinkmorethantwocupsofcoffeeadayha
3、veagreaterchanceofhavingdiseasethanthose________don’t.(2006北京）A.who;/B./;whoC.who;whoD./;/2.Lastweek,onlytwopeoplecametolookatthehouse,_______wantedtobuyit.（2007安徽）A.noneofthemB.bothofthemC.noneofwhomD.neitherofwhom3.peopletalkaboutthehistoricspotsinBeiji
4、ng,thefirst_______comesintomindistheForbiddenCity.A.WhichB.thatC.oneD.place解析：注意that与which的异同：通常当先行词指物时,引导定语从句的关系代词可用that或which,两词可互换。但也有时候两词不能那个互换。巧记that与which的异同：that情况比较多,不妨对你说一说；不定代词这路货，全用that准没错。先行词前被限制，千万不要用which;要用which别着急，介词在前逗隔离。4.lookout!Don’tge
5、ttooclosetothehouse___roofisunderrepair.(2006.福建)A.whoseB.whichC.ofwhichD.that解析：通常用whose做所修饰的先行词的所有格，表示“某人或某物的”。当先行词指物时，whose+noun=the+n+of+whichof+which+the+n5.TheBeatles,_____manyofyouareoldenoughtoremember,camefromLiverpool.（2006.天津）A.WhatB.thatC.howD
6、.as解析：同：①as;which都能引导非限制性定语从句，且代替整个主句。异：①Which引导的定语从句一般放主句后。As引导的定语从句可放主句前，主句中或主句后。②as有“正如”“就像”的意思。As引导非限制性定语从句常见习语有：asweallknow；asisknowntoall;aswehadexpected;asisreportedinthenewspaper;asisoftenthecase,ashasbeenannounced,asismentionedabove,asIexplainedo
7、nthephone温馨提示：注意as引导非限制性定语从句与其他从句的区别：高考题例：___isknowntousallisthat2008olympicgameswilltakeplaceinBeijing.(2008,福建）A.ItB.WhatC.AsD.WhichAsisknowntousall,…Itisknowntousallthat…Whatisknowntousallisthat…as还可以用于以下情形引导定语从句⑴先行词被thesame所修饰时，关系代词既可用that,也可用as，但是意义不
8、同。前者表示“同一”，后者表示“同样的，同类的”ThisisthesamebookthatIboughtlastweek.ThisisthesamebookasIboughtlastweek.⑵such修饰先行词，关系代词只能用as,不能用that。例如：Don’treadsuchbooksasyoucan’tunderstand.但是such…that可引导结果状语从句，例如：Theteacheraskedsuchadiff
