定语从句及专项练习语法解释：定语从句——修饰名词或代词的从句。
换句话说，名词、代词后的从句叫定语从句。
先行词——被定语从句修饰的名词、代词、甚至词组或句子叫先行词。
关系词——引导定语从句的词叫关系词。
关系词分两种：一是关系代词(在定语从句中担任主、宾、表、定语成分)二是关系副词(在定语从句中担任状语成分)关系词的三个功能：1. 连接功能（连接先行词与定语从句）；2. 担任功能（在定语从句中担任主、宾、表、定、状语）；3. 替代功能（在定语从句中代替先行词）。
Aplaneisamachine.ThemachinecanflP. ——Aplaneisamachine,andthe machinecanflP. ——AplaneisamachinethatcanflP.关系代词有：who,whom,whose,that,which,as在定语从句中可担任主语的是：who,that,which,as在定语从句中可担任宾语的是：who,whom,that,which,as在定语从句中可担任定语的是：whose,which当先行词是人时，可用的关系词是：who,whom,that,as当先行词是物时，可用的关系词是：which,that,whose,as关系副词有：when(先行词为时间),where(先行词为地点),whP(先行词为原因) 关系副词=介词+which/whom定语从句分为两种：限制性与非限制性。
先行词与关系词之间无逗号隔开为限制性；有逗号隔开则为非限制性。
非限制性定语从句一般不可用关系代词that引导。
唯一可以置于先行词之前的定语从句由关系代词as引导。
以下练习详细介绍了定语从句使用的具体语法规则。
一.单选：1.Afootballfanis_____hasastronginterestinfootball.A.thatB.whoC.apersonwhoD.what2. Thehouse,_____wasdestroPedintheterriblefire,hasbeenrepaired.A.whoseroofB.whichroofC.itsroofD.theroof3. CanPoulendmethenovel_____theotherdaP?A.thatPoutalkedB.PoutalkedaboutitC.whichPoutalkedD.Poutalkedabout4. Thematter_____Pouwerearguingaboutlastnighthasbeensettled.A.thatB.whatC.whPD.forwhich5. ThePtalkedforaboutanhourofthingsandpersons_____thePrememberedintheschool.A.whichB.thatC.whoD.whom6. Who_____hascommonsense（常识）willdosuchathing?A.whichB.whoC.whomD.that7. Alltheapples_____felldownwereeatenbPthepigs.A.thatB.thoseC.whichD.what8. ThePaskedhimtotellthemeverPthing_____hesawatthefront.A.whatB.thatC.whichD.where9. I’ll tellPou_____hetoldmelastnight.A.allwhichB.allwhatC.thatallD.all10. Achild_____parentshavediediscalledanorphan.A.whoB.who’sC.whoseD.which11. Isthisthemuseum_____PouvisitedtheotherdaP?A.thatB.whereC.inwhichD.theone12. Isthismuseum_____someGermanfriendsvisitedlastWednesdaP?A.thatB.whereC.inwhichD.theone13. —HowdoPoulikethebook? —It’s quitedifferentfrom_____Ireadlastmonth.A.thatB.whichC.theoneD.theonewhat14. Isthatthereason_____Pouareinfavoroftheproposal?A.whichB.whatC.whPD.forthat15. Thetrain_____shewastravelingwaslate.A.whichB.whereC.onwhichD.inthat16. HehaslostthekePtothedrawer_____thepapersarekept.A.whereB.onwhichC.underwhichD.which17. Antarctic_____weknowverPlittleiscoveredwiththickiceallthePearround.A.whichB.whereC.thatD.aboutwhich18. Hearrivedatatime,______,inhisopinion,wasratherinappropriateforthem.A.thatB./C.whichD.when19. Heoftenhelpsthestudents_____hethinksarenotquickattheirstudies.A.whomB.whoC.whenD.because20. TheSecondWorldWar_____millionsofpeoplewerekilledendedin1945.A.whenB.duringthatC.inwhichD.which21. HewasborninthePear_____theAnti-JapaneseWarbrokeout.A.whichB.whenC.onwhichD.duringwhich22. Mr.CrossettwillneverforgetthedaP_____hespentwithhisvariousstudents.A.whenB.whichC.onwhichD.inwhich23. Thisisjusttheplace_____IamlookingforwardtovisitingthesePears.A.thatB.whereC.inwhichD.towhere24. WearegoingtospendtheSpringFestivalinGuangzhou,_____livemPgrandparents.A.whichB.thatC.whoD.where25. Thehotel_____duringourholidaPsstandsbPtheseaside.A.inwhichwestaPedB.wherewestaPedatC.westaPedD.inthatwestaPed26. Ihaveboughtthesamedress_____sheiswearing.A.asB.thatC.whichD.than27. Heisnot_____afool_____.A.such/asheislookedB.such/ashelooksC.as/asheislookedD.so/ashelooks28. Thetime______wasgiventouswastoolimited.WemusthurrPup.A.whenB.duringwhichC.thatD.forwhich29. Someoftheroadswereflooded,_____madeourjournePmoredifficult.A.whichB.itC.whatD.that30. HemustbefromAfrica,_____canbeseenfromhisskin.A.thatB.asC.whoD.what31. Hehastwosons,_____workaschemists.A.twoofwhomB.bothofwhomC.bothofwhichD.allofwhom32. Thebuses,_____werealreadPfull,weresurroundedbPanangrPcrowd.A.mostofthatB.whichmostC.mostofwhichD.thatmost33. MPglasses,_____Iwaslikeablindman,felltothegroundandbroke.A.whichB.withwhichC.withoutwhichD.that34. Mr.Wu,_____everPbodPlikes,isgoingtogiveusatalkonchemistrP.A.whomB.thatC.whichD./35. ThisisMr.Smith,_____Ithinkhassomethinginterestingtotellus.A.whoB.whomC.thatD./36. _____,thecompasswasfirstmadeinChina.A.ItisknowntoallB.ItisknownthatC.WeallknowD.Asisknowntoall37. I,_____Pourgoodfriend,willtrPmPbesttohelpPouout.A.whoisB.whoamC.thatisD.whatis38. HeisamanofgreatePperience,_____muchcanbelearned.A.whoB.thatC.fromwhichD.fromwhom39. Itwassuchaseriousmistake,_____causedbPcarelessness.A.whichIthinkwasB.whichIthinkitwasC.IthinkwhichwasD.Ithinkwhichitwas40. HelivedinLondonfor3months,during_____hepickedupsomeEnglish.A.thisB.whichC.thatD.when41.Thegeneralatlastgotachancetovisitthevillage_____heusedtofight,_____hehadbeendreamingoffo rPears.A.that/whichB.where/thatC.inwhich/whatD.where/which42. Iwillhiretheman_____thePsaPisagoodEnglishspeaker.A.whoB.thatC.whichD.whom43. HehastoworkonSundaPs,_____hedoesnotlike.A.andwhichB.whichC.andwhenD.when44. Igavehimawarning,_____heturnedadeafear.A.ofwhichB.forwhichC.tothatD.towhich45. MPfatherhasmademe_____Iam.A.whoB.whichC.whatD.that46. Sheisoneofthefewgirlswho_____passedtheePamination.A.wasB.wereC.hasD.have47. HeismPson,_____abettersondoesnotePist.A.butB.thanwhoC.againstwhomD.thanwhom48. AsmanPmembers_____werepresentagreedtotheplan.A.whoB.thatC.whichD.as49. PoumaPcallonmefromonetofive o’clock,during_____IamalwaPsathome.A.thetimeB.whattimeC.thattimeD.whichtime50. Chinaisthebirthplaceofkites,_____kiteflPing(放风筝)spreadtoJapan,Korea,andIndia.A.fromthereB.whereC.fromwhereD.there二. 用定语从句完成下列句子：1. I’ve grownsocrazPabouteverPthing________________________________________________(与大自然有关的).2. IamonlPabletolookatnaturethroughdirtPcurtains____________________________(挂在满是灰尘的窗前的).3. LaterinthenePtcenturP,people___________________________(来自英格兰的)madevoPagetoconquerotherpartsoftheworld.4.AtfirsttheEnglish______________________________________________________________ __(在公元450至1150年间所说的)wasverPdifferentfromtheEnglishwhich/thatisspokentodaP. 5. WhenItoldherthatourjournePwouldbeginatanaltitude________________________________(有五千多米高的),sheseemedtobeePcitedaboutit.6. Thebook______________________________________________(老师刚刚提到的)willbeverPhelpfulwithourEnglishlearning.7. Mr.SmithisverPwealthP,butheisalwaPsdrivinganoldcar____________________________(门都已经破了的).8. ScientistsaretrPingtoePplainthereasons_____________________________________________(为什么地球正在变暖).9. LiHuahastwocousins___________________________________(在北京工作的),andanotherone_______________________________(在家乡务农的).10. Therearethreebooksonthedesk,allof_______________________________________________(都是有关南非黑人的平等权利的).Answerstothepractice:1–5 CADAB 6–10 DABDC11–15 ADCCC 16–20 ADCBC21–25 BBADA 26–30 ABCAB31–35 BCCAA 36–40 DBDAB41–45 DABDC 46–50 DCDDC1.thathassomethingtodowithnature2.that/whichwerehangingbeforeverPdustPwindows3.whocamefromEngland4.which/thatwasspokeninEnglandbetweenaboutAD450and11505.which/thatwasofmorethan5,000meters6.which/thattheteachermentionedjustnow7.whosedoorisbroken8.whPtheearthisbecomingwarmer9.whoareworkinginBeijing; w hoisfarminginthehometown10.whichareabouttheequalrightsforblackpeopleinSouthAfrica。