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21语法复习四：定语从句（一）定语从句一般由关系代词和关系副词引导1、关系代词：who,whom,whose,which,that,as2、关系副词：when,where,why关系代词和关系副词必须位于从句之首，主句先行词之后，起着连接先行词和从句的作用，同时在从句中又充当句子成分。e.g.Sheisthegirlwhosingsbestofall.（关系代词who在从句中作主语）ThecomradewithwhomIcameknowsFrench.（whom在从句中作介词with的宾语）3、关系代词和关系副词的用法：1）当先行词为人时用who作主语，whom作宾语；2）当先行词为物或整个句子时用which，可作主语或宾语；3）先行词为人、物时用that，可作主语或宾语；4）whose用作定语，可指人或物；5）关系副词when（指时间，在定语从句中作时间状语，where（指地点，在定语从句中作地点状语），why（指原因，在定语从句中作原因状语）。（二）限制性定语从句与非限制性定语从句1、限制性定语从句：从句与主句关系密切，去掉从句，主句意义不完整，甚至不合逻辑。e.g.Iwastheonlypersoninourofficewhowasinvited.（去掉定语从句，意思就不完整）2、非限制性定语从句：从句对先行词关系不密切，去掉定从句，意思仍然完整。形式上用逗号隔开，不能that用引导。e.g.Tom’sfather,whoisoversixty,stillworksharddayandnight.（who引导非限制性定语从句，整个句子可分成两句来翻译）（三）使用定语从句时特别注意的几个问题1、that与which的区别。1）用that而不用which的情况：①先行词为不定代词all,anything,nothing,…；②先行词有最高级修饰，有序数词修饰；③先行词有only,very,any等词修饰；④先行词既有人又有物时。e.g.Thereisnothingthatcanpreventhimfromdoingit.没有什么能阻止他不干那件事。ThefirstplacethattheyvisitedinGuilinwasElephantTrunkHill.在桂林他们所参观的第一个地方是象鼻山。ThisisthebestfilmthatIhaveeverseen.这部电影是我看过的最好的一部。MrSmithistheonlyforeignerthatheknows.史密斯先生是他认识的唯一的外国人。2）用which而不用that的情况：①引导非限制性定语从句；②代表整个主句的意思；③介词+关系代词。e.g.Hehadfailedinthemathsexam,whichmadehisfatherveryangry.他数学考试没有及格，这使他的父亲很生气。Thisistheroominwhichmyfatherlivedlastyear.这是父亲去年居住过的房子。3）as引导定语从句时的用法①as引导限制性定语从句通常用于thesame…as,such…as结构中。e.g.Iwantthesameshirtasmyfriend’s.我要一件跟我朋友一样的衬衫。22SuchmachinesasareusedinourworkshoparemadeinChina.我们车间使用的这种机器是中国制造的。②as引导非限制性定语从句既可放在主句之前，也可放在主句之后，用来修饰整个句子。通常用下列句型：asisknowntoall,asissaid,asisreported,asisannounced,asweallknow,asIexpect等。e.g.AsIexpected,hegotthefirstplaceagaininthismid-termexamination.正如我所预料的那样，他在这次期中考试中又获得了第一名。3）as引导非限制性定语从句时与which的区别①当主句和从句语义一致时，用as；反之，用which来引导非限制性定语从句。e.g.Hemadealongspeech,asweexpected.Hemadealongspeech,whichwasunexpected.②当非限制定语从句为否定时，常用which引导。e.g.Tomdrinksaloteveryday,whichhiswifedoesn’tlikeatall.2.关系代词在从句中作主语时，从句的谓语动词单数还是用复数应由先行词决定。e.g.ThemanwholivesdownstairsspeaksEnglishfluently.住在楼下的那个人英语说得很流利。ThestudentswhoareinGradeThreearegoingtoclimbthehilltomorrow.3.定语从句有时不直接紧靠先行词，中间由一个定语、状语或谓语隔开。e.g.ThereisanexpressioninhiseyesthatIcan’tunderstand.4.引导定语从句的关系副词有时可以用“介词+which”来代替。e.g.October1,1949wasthedayonwhich(=when)thePeople’sRepublicofChinawasfounded.5.当定语从句中谓语动词是带介词或副词的固定短语动词时，短语动词的各个固定部分不要拆开。e.g.Thesickmanwhomsheislookingafterisherfather.6.介词在关系代词前，只能用which和whom，且不能省略；介词在句尾，关系代词可有which,that,whom,口语中也可用who，且可省略。e.g.Theman(whom/who/that)youweretalkingabouthascometoschool.7．定语从句与同位语从句的区别。①定语从句引导词被称为关系词，that充当主语、宾语、表语。有时可省略。②同位语从句引导词被叫做连词，that不能充当任何成分，不可省。Wordcamethattheirarmywasdefeated.(同位语)Weexpressedtothemourwishthatwasthesameastheir.(定语)8．定语从句与强调句型的区别Itwasinthehotelthatwestayedlastnight.（强调句）Itwasthehotelwhere/inwhichwestayedlastnight.(定语从句)9．几个特殊的定语从句句型：①Heistheonlyoneofthestudentswhohasgotverygoodmarksinthematch.（句中one为先行词）Heisoneofthestudentswhohavegotgoodmarksinthematch.（句中students为先行词）②Isthisplacetheone(that)wevisitedyesterday?Isthistheplace(that/which)wevisitedyesterday?23③Hestoodatthewindow,fromwherehecouldseewhatwashappening.④Itmayrain,inwhichcasethematchwillbeputoff.二、精典名题导解选择填空1.Thefilmbroughtthehoursbacktome_________Iwastakengoodcareofinthatfarawayvillage.（NMET2001）A.untilB.thatC.whenD.where解析：答案为C。本题考查分隔定语从句的关系词的选择。作好本题的关键是要能辨认出该定语从句的先行词thehours和关系词被介词短语tome所分隔。定语从句的先行词是表时间的名词hours,并且关系词在从句中用作状语，故应选择表示时间的关系副词when。2.___________isknowntoeverybody,thenoontravelsaroundtheearthonceeverymonth.(NMET2001)A.ItB.AsC.ThatD.What解析：答案为B。本题考查as引导的非限制定语从句。as作“正如……”解时，引导的非限制性定语从句来修饰整个句子。当as在从句中作主语时，常用于下列短语：asisknown、asissaid、asisreported、asisannounced等。要注意掌握作关系代词引导定语从句的用法。3.AfterlivinginPairsforfiftyyearshereturnedtothesmalltown___________hegrewupasachild.(NMET1996)A.whichB.whereC.thatD.when解析：答案为B。本题考查限制性定语从句中关系词的选择。定语从句的先行词是表示地点的名词短语thesmalltown,且关系词不作定语从句中的主语和宾语而作地点状语，因此定语从句必须用关系副词where引导。要注意分清先行词在从句中充当的成分，然后选择适当的关系词。练习、定语从句一、把下列每对句子合并成含有定语从句的主从复合句：1.Thefanisonthedesk.Youwantit.2.Themanisinthenextroom.Hebroughtourtextbookshereyesterday.3.Themagazineismine.Hehastakenitaway.4.Thestudentswillnotpasstheexam.Theydon’tstudyhard.5.Thewomanisourgeographyteacher.Yousawherinthepark.6.Theletterisfrommysister.Ireceivedityesterday.7.Theplaywaswonderful.Wesawitlastnight.8.Thetrainwaslate.ItwasgoingtoNanning.9.Theboyismybrother.Hewashereaminuteago.2410.Thetreeisquitetall.Heisclimbingit.11.Hereisthegirl.Herbrotherworksinthisshop.12.That’sthechild.Wewerelookingathisdrawingjustnow.13.Thisistheboy.Hissisterisafamoussinger.14.Iwanttotalktotheboys.Theirhomeworkhaven’tbeenhandedin.15.Isthatthewoman?Herdaughterisinmyclass.16.Heusedtoliveinabighouse.Infrontofitgrewmanybananatrees.17.Theypassedafactory.Atthebackofthefactorytherewerericefields.18.Thesoldierrantothebuilding.Onthetopofitflewaflag.19.Intheeveningtheyarrivedatahill.Atthefootofthehilltherewasatemple.20.Shecameintoabigroom.Inthemiddleofitstoodalargetable.二、根据句子意思，在第一个空白处填入介词，在第二个填入关系代词whom或which:1.Theperson________________IspokejustnowisthemanagerthatItoldyouabout.2.Thepencil________________hewaswritingbroke.3.WuDong,________________Iwenttotheconcert,