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1、定语从句定语的作用是_。名词，形容词，副词，介词短语等都可在句中充当定语。如：anappletreeabigbagpeopletherestudentsofclass5此外，定语也可由句子来充当，_叫定语从句，定语从句是定语的其中一种形式。修饰、限定名词或代词修饰、限定名词或代词在复合句中充当定语的句子在复合句中充当定语的句子从句：英语中的从句与普通的简单句一样，都是完整的句子，不同的是所有从句都需要有_来引导。如：Theboywho was late isill.Iheardthat he graduated from Harvard.What I said isveryimportantt
2、oyou.引导词引导词定语从句的引导词分为两种：_和_。定语从句的引导词有一下作用：1.引导定语从句；2.指代前面的名词，代词（有时指整个句子）；3.在所引导的定语从句中充当句子成分（如作主语、宾语、定语、状语）。关系代词关系代词关系副词关系副词找出下列句中的定语从句，并分析引导词在定语从句中充当的成分。Chinaisacountrywhichhasalonghistory.Thisisthebookwhichyougavemebefore.ThemanwhoisgivingthespeechismyEnglishteacher.Sheisthemanagerwhomyouwanttoknow
3、.Hehasafriendwhosefatherisadoctor.主语主语宾语宾语主语主语宾语宾语定语定语找出下列句中的定语从句，并分析引导词在定语从句中充当的成分。Thebookthathewroteisboring.ThebookthatinterestsmealotiswrittenbyRolling.Wedontknowthereasonwhyhedidntshowup.Itsthetimewhenyouhavetomakeachoice.Thisisthevillagewherehewasborn.John,asyouknow,isafamouswriter.宾语宾语主语主语原因状
4、语原因状语时间状时间状语语地点状语地点状语宾语宾语填写下方表格，总结定语从句各引导词的用法特点。引引导词可指代的先行可指代的先行词的的类型型在从句中充当在从句中充当可否省略可否省略thatwhichaswhomwhosewhowhenwherewhy人，物人，物主，宾主，宾作宾语时可作宾语时可物物主，宾主，宾作宾语时可作宾语时可用于固定结构中用于固定结构中人人宾宾可以可以人，物人，物定定不可不可人人主主不可不可时间名词时间名词状状不可不可地点名词地点名词状状不可不可原因名词原因名词状状不可不可为下列定语从句填入适当的引导词。1.TheboydidntpasstheEnglishexam,_ma
5、dehisparentsangry.2.MrBlack,_Ilikebest,willreturnhomesoon.3.Aretheythepersons_gotontothemoonin1969?4.Ourtwocountriesareneighbors_friendshipwilllastforever.5.Whereistheboy_armwashurtbythewindow_glassisbroken?whichwhomwho/that whosewhosewhose为下列定语从句填入适当的引导词。6.Theproblem_troubledhimhasalreadybeensolved
6、.7.Theyworkinafactory_makesradioparts.8.Thefactory_myfatherworksisfaraway.9.TaiwanbelongstoChina,_isknowntoall.10.Iwillneverforgettheday_IwasadmittedtoPekingUniversity.which/thatthat/whichwhereaswhen把下列每对句子合并成含有定语从句的主从复合句Eg.Thefanisonthedesk.Youwantit.Thefanwhichyouwantisonthedesk.1.Themanisinthenex
7、troom.Hebroughtbookshereyesterday.2.Themagazineismine.Hehastakenitaway.3.Thestudentswillnotpasstheexam.Theydontstudyhard.4.ThewomanisourEnglishteacher.Yousawherinthepark.把下列每对句子合并成含有定语从句的主从复合句5.Theletterisfrommysister.Ireceivedityesterday.6.Theplaywaswonderful.Wesawitlastnight.7.Thetrainwaslate.Itwa
8、sgoingtoNanning.8.Theboyismybrother.Hewashereaminuteago.9.Thetreeisquitetall.Heisclimbingit.把下列每对句子合并成含有定语从句的主从复合句1.Themanisinthenextroom.Hebroughtourtextbookshereyesterday.Themanwhobroughtourtextbookshereyesterdayisinthenextroom.Themanwhoisinthenextroombroughtourtextbookshereyesteday.2.Themagazinei
9、smine.Hehastakenitaway.Themagazinewhich/thathehastakenawayismine.3.Thestudentswillnotpasstheexam.Theydontstudyhard.Thestudentswhodontstudyhardwillnotpasstheexam.把下列每对句子合并成含有定语从句的主从复合句4.ThewomanisourEnglishteacher.Yousawherinthepark.Thewomanwhom/thatyousawintheparkisourEnglishteacher.5.Theletterisfro
10、mmysister.Ireceivedityesterday.Theletterwhich/thatIreceivedyesterdayisfrommysister.6.Theplaywaswonderful.Wesawitlastnight.Theplaywesawlastnightwaswonderful.把下列每对句子合并成含有定语从句的主从复合句7.Thetrainwaslate.ItwasgoingtoNanning.Thetrainwhich/thatwasgoingtoNanningwaslate.8.Theboyismybrother.Hewashereaminuteago.T
11、heboythat/whowashereaminuteagoismybrother.9.Thetreeisquitetall.Heisclimbingit.Thetreethat/whichheisclimbingisquitetall.五、限制性定语从句和非限制性定语从句五、限制性定语从句和非限制性定语从句限制性定语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，故不能删除；形式上不用逗号和主句隔开。The girl who is in red is my sister.非限制性定语从句和主句关系不十分密切，起补充说明作用，如果去掉，主句的意思仍然清楚，可用逗号和主句隔开。I l
12、ike this book,which is given by Lucy to me as a birthday present.that不能引导非限制性定语从句，即逗号后不用that.which引导非限制性定语从句，除了可以指代名词或代词，也可指代前面整个句子。The gold medals,which stand for glory,are the dream of all the players.He has been to Paris more than several times,which I dont believe.as可引导限制性定语从句和非限制性定语从句。引导限制性定语从句
13、时常用于固定结构中，如such.as,thesame.as,asas等。Such books as you bought is useless.引导非限制性定语从句时即可指代名词或代词，也可指代前面整个句子，而且它的位置比which更加灵活，可放在句首。As is known to all,China is a developing country.He is from the south,as we can see from his accent.John,as you know,is a famous writer.介词关系代词引导的定语从句介词关系代词引导的定语从句1.关系代词在定语从句
14、中做介词宾语时，常把介词提前于关系代词之前，即构成介词+关系代词引导定语从句。The school(that/which)he once studied in is very famous.The school in which he once studied is very famous.Tomorrow I will bring here a magazine(that/which)you asked for.Tomorrow I will bring here a magazine for which you asked.2.介词关系代词引导定语从句，关系代词只有两个：which和who
15、m,指人时用whom,指物时用which；The man with whom you talked is my friend.The plane in which we flew to Canada is very comfortable.IsaacwasanAmericanwriter1wrotearound480books2includedscienceandhistorybooks,andevenbooksabouttheBibleandaboutShakespeare.Buthisbestknownworkwashissciencefictionstories.Hehadbothani
16、magination3gavehimtheabilitytowriteaboutfutureworldsandanamazingmindwith4hesearchedforexplanationsofeverything,inthepresentandthepast.HislifebeganinRussia5hewasbornon2January,1920.ItendedinNewYorkon6April,19926hediedasaresultofanearthquake7happenedonarainyday.Attheageofnine,10hismotherwaspregnantwithherthirdchild,Isaacstartedworkinginthecandystore.