2025-2026年部编版高二英语第9单元语法填空专项题库

2025-2026年部编版高二英语第9单元语法填空专项题库一、单项选择题（总共10题，每题2分，共20分）1.The9thunitofthe2025-2026editionoftheMinistry-compiledseniorhighschoolEnglishtextbookfocusesonthegrammaticalstructureof______.A.irregularverbsinthepassivevoiceB.theuseofrelativeclausesincomplexsentencesC.conditionalsentenceswith"if"and"unless"D.theformationofperfectcontinuoustenseinnarrativewritingAnswer:BExplanation:The9thunitspecificallytargetsadvancedsentenceconstructiontechniques,emphasizingthemasteryofrelativeclauses(who,which,that,where,when)asacoregrammaticalfocus.Thisalignswiththeunit'ssyllabusobjectives,whichprioritizecomplexsentencestructuresoverotheroptionslikepassivevoice(commoninearlierunits)orconditionalsentences(coveredinpreviousmodules).Thetextbook'sprogressivenatureensuresthisunitbuildsonfoundationalknowledgewhileintroducingmoresophisticatedlanguagetoolsforacademicandformalwriting.2.Whenfillinginablankwith"who"or"that"inthe9thunit,studentsshouldpayattentionto______.A.thesubject-verbagreementintherelativeclauseB.thetenseconsistencybetweenthemainclauseandtherelativeclauseC.whethertherelativepronounisomittedorretainedD.alloftheaboveAnswer:DExplanation:Theunitsystematicallyaddressesthreecriticalaspectsofrelativeclauses:subject-verbagreement(e.g.,"thebookwhichisinteresting"),tensealignment(e.g.,"theteacherwhotaughtuslastyear"),andtheoptionalomissionofrelativepronouns(e.g.,"themanImetyesterday"vs."themanwhoImetyesterday").Masteryoftheserulesisexplicitlylistedintheunit'slearningoutcomes,makingDthemostcomprehensiveanswer.3.Thephrase"suchas"inthe9thunitistypicallyusedto______.A.introducealistofexampleswithaconcludingsentenceB.replacearelativeclauseinformalwritingC.indicateacontrastbetweentwoideasD.modifyanouninthepassivevoiceAnswer:AExplanation:Theunitdistinguishes"suchas"from"like"byemphasizingitsformalusagetointroduceexampleswithoutalteringthesentencestructure(e.g.,"Manysports,suchasswimmingandbasketball,requirephysicalfitness").Thisdiffersfrom"like,"whichismorecolloquial,andfromtransitionalphraseslike"however"(contrast)orprepositions(e.g.,"inthepassivevoice").Thetextbookprovidesexplicitexamplesof"suchas"inacademiccontexts.4.Astudentwrites,"ThefilmwhichIwatchedlastnightwasthrilling."The9thunitwouldadvisecorrectingthisto______.A."Thefilm,whichIwatchedlastnight,wasthrilling."B."ThefilmthatIwatchedlastnightwasthrilling."C."Iwatchedathrillingfilmwhichwaslastnight."D."ThefilmIwatchedlastnightwasthrilling."Answer:DExplanation:Theunitfocusesonreducingredundancybyomittingunnecessaryrelativeclauses(e.g.,"ThefilmIwatchedlastnightwasthrilling").Thisruleishighlightedinexerciseswherestudentsidentifyandcorrectoveruseofrelativepronouns.OptionAintroducesacommasplice,Bincorrectlyuses"that"withapassiveverb,andCreversesthesentencestructure,whichviolatestheunit'semphasisonmaintaininglogicalflow.5.Theunit'sgrammarexercisesoftenincludesentenceslike"Themuseumwherewevisitedlastyearhasmanyexhibits."Thecorrectformwouldbe______.A."Themuseum,wherewevisitedlastyear,hasmanyexhibits."B."Themuseumthatwevisitedlastyearhasmanyexhibits."C."Themuseumwhichhasmanyexhibitswaswherewevisitedlastyear."D."Themuseumwevisitedlastyearhasmanyexhibits."Answer:DExplanation:Theunitteachesthereductionofrelativeclauseswith"where"whentheantecedentisaplace(e.g.,"Themuseumwevisitedlastyearhasmanyexhibits").Thissimplifiescomplexsentenceswhilepreservingmeaning,akeyskillemphasizedintheunit.OptionAincorrectlyaddsacommasplice,Buses"that"inappropriatelywithapassiveverb,andCunnecessarilysplitsthesentence.6.Whenusing"whose"inthe9thunit,studentsmustensureitrefersto______.A.apersonoranimal(notinanimateobjects)B.aplace(e.g.,"thehousewhoseroofisred")C.atime(e.g.,"thedaywhoseweatherwassunny")D.acondition(e.g.,"thesituationwhoseoutcomeisuncertain")Answer:AExplanation:Theunitexplicitlystatesthat"whose"isreservedforhumanoranimalpossessives(e.g.,"Thegirlwhosehairislongsangbeautifully").Thiscontrastswith"which"(inanimateobjects,e.g.,"thebookwhosecoverisblue")andotherpossessivepronouns(e.g.,"my,""your").Thetextbookincludesexerciseswherestudentsidentifyincorrectusesof"whose"withinanimatenouns.7.Theunitintroducestheconceptofnon-restrictiverelativeclauseswith______.A.commastosetofftheclauseB.semicolonstoseparateideasC.parenthesestohighlightexamplesD.dashestoaddemphasisAnswer:AExplanation:The9thunitteachesthatnon-restrictiveclausesprovideadditionalbutnon-essentialinformationandaresetoffbycommas(e.g.,"Mybrother,wholivesinLondon,isvisitingusnextweek").Thisruleiscontrastedwithrestrictiveclauses,whichareessentialandrequirenocommas.Thetextbookprovidesexamplesofeachtypetoclarifythedistinction.8.Asentenceinthe9thunit'sexercisereads:"ThescientistwhoseresearchwasgroundbreakingreceivedaNobelPrize."Thecorrectalternativewithoutchangingmeaningwouldbe______.A."Thescientist,whoseresearchwasgroundbreaking,receivedaNobelPrize."B."ThescientistwhoreceivedaNobelPrizedidgroundbreakingresearch."C."ThescientistwhoseresearchwasgroundbreakingreceivedaNobelPrize."D."ANobelPrizewasreceivedbythescientistwhoseresearchwasgroundbreaking."Answer:CExplanation:Theunitemphasizesthatnon-restrictiveclausescanbeomittedwithoutalteringthecoremeaning(e.g.,"ThescientistwhoseresearchwasgroundbreakingreceivedaNobelPrize").OptionAincorrectlyaddsacommasplice,Bchangesthesentencestructure,andDshiftstothepassivevoice,whichisnotthefocusoftheunit.9.Theunitwarnsagainstconfusing"who"and"whom"inrelativeclauses,especiallyin______.A.formalacademicwritingB.casualconversationsC.poeticexpressionsD.children'sliteratureAnswer:AExplanation:The9thunitexplicitlyaddressesthesubject-verbagreementrule("who"assubject,"whom"asobject)topreparestudentsforformalwriting(e.g.,"Theauthor,whowrotethebook,signedcopies").ThisisacommonerrorinadvancedEnglish,andthetextbookprovidesdrillstoreinforcethedistinction.Casuallanguageoftenomitsthisrule,makingformalwritingtheprimarycontextforthislesson.10.Astudentwrites,"Thedogwhichbarkedloudlylastnightwasmine."The9thunitwouldsuggestrevisingto______.A."Thedog,whichbarkedloudlylastnight,wasmine."B."Thedogthatbarkedloudlylastnightwasmine."C."Thedogwhosebarkwasloudlastnightwasmine."D."Thedogbarkedloudlylastnightandwasmine."Answer:BExplanation:Theunitteachesthat"which"ismoreflexiblethan"who"(canbeobject)butstillfollowsgrammaticalrules.Inthiscase,"barked"isatransitiveverb,so"which"iscorrect.However,"that"isalsoacceptableinthiscontext,makingBthebestchoice.OptionAaddsacommasplice,Cunnecessarilychangestheverbform,andDsplitsthesentence.二、填空题（总共10题，每题2分，共20分）1.Inthe9thunit,studentslearnthatanon-restrictiverelativeclauseshouldbeseparatedby______.Answer:commasExplanation:Theunitexplicitlystatesthatnon-restrictiveclauses,whichprovideextrabutnon-essentialinformation,aresetoffbycommas(e.g.,"Theteacher,whoisverykind,teachesEnglish").Thisisafoundationalruleforadvancedwriting,contrastedwithrestrictiveclausesthatareessentialandrequirenocommas.2.Therelativepronoun"whose"isusedtoshowpossessioninthe9thunit,suchas"Thegirlwhosebagisblueismysister."Here,"whose"referstothe______.Answer:bagExplanation:Theunitemphasizesthat"whose"isreservedforhumanoranimalpossessives(e.g.,"Theboywhosefatherisadoctorissmart").Inthisexample,"whosebag"indicatespossessionoftheobject"bag,"notthesubject"girl."Thetextbookprovidesexercisestoclarifythisdistinctionfrom"which"(inanimateobjects).3.Whenarelativepronounisomittedinthe9thunit,theantecedentmustbe______.Answer:anounorpronounExplanation:Theunitteachesthatrelativepronouns("who,""which,""that,""whose")canbeomittedwhentheantecedentisclear(e.g.,"ThebookwhichIboughtyesterdayisinteresting").Theruleappliesonlytonounphrases,nottoverbsoradjectives.Thetextbookincludesexampleswhereomittingthepronounwouldcreateambiguity.4.Thephrase"suchas"inthe9thunitisusedtointroduce______.Answer:examplesExplanation:Theunitdistinguishes"suchas"from"like"byexplainingitsformalusagetointroduceexampleswithoutalteringthesentencestructure(e.g.,"Manysports,suchasswimmingandbasketball,requirephysicalfitness").Thetextbookwarnsagainstusing"like"informalacademicwriting.5.Arelativeclauseis"restrictive"inthe9thunitifit______.Answer:isessentialtothemeaningofthesentenceExplanation:Theunitexplainsthatrestrictiveclausesprovidenecessaryinformationtoidentifythenoun(e.g.,"Themanwholivesnextdoorismyneighbor").Iftheclauseisremoved,themeaningwouldchangeorbecomeunclear.Thetextbookcontraststhiswithnon-restrictiveclauses,whichareoptional.6.Therelativepronoun"that"canfunctionasbothasubjectandan______inthe9thunit.Answer:objectExplanation:Theunitteachesthat"that"ismoreflexiblethan"who"(canbesubjectorobject)andisoftenpreferredinformalwriting(e.g.,"ThebookthatIreadyesterdaywasfascinating").Thetextbookprovidesexamplesof"that"astheobjectofaverb(e.g.,"Thehousethatwevisitedwasold")orpreposition.7.Theunitwarnsagainstconfusing"who"and"whom"whentherelativepronounisthe______.Answer:objectofaverborprepositionExplanation:The9thunitaddressesthesubject-verbagreementrule("who"assubject,"whom"asobject)topreparestudentsforformalwriting(e.g.,"Theauthor,whomImetyesterday,isfamous").ThisisacommonerrorinadvancedEnglish,andthetextbookprovidesdrillstoreinforcethedistinction.8.Asentenceinthe9thunit'sexercisereads:"ThecitywhereIgrewuphasmanyparks."Thecorrectalternativewithoutchangingmeaningwouldbe______.Answer:"ThecityIgrewupinhasmanyparks."Explanation:Theunitemphasizesthatrelativeclauseswith"where"canbereducedwhentheantecedentisaplace(e.g.,"ThecitywhereIgrewuphasmanyparks").Thissimplifiescomplexsentenceswhilepreservingmeaning,akeyskillemphasizedintheunit.9.Theunitintroducestheconceptofnon-definingrelativeclauseswith______.Answer:commasExplanation:The9thunitteachesthatnon-definingclausesprovideadditionalbutnon-essentialinformationandaresetoffbycommas(e.g.,"Mybrother,wholivesinLondon,isvisitingusnextweek").Thisisafoundationalruleforadvancedwriting,contrastedwithdefiningclausesthatareessentialandrequirenocommas.10.Therelativepronoun"which"canreferto______inthe9thunit.Answer:people,animals,orthingsExplanation:Theunitexplainsthat"which"ismoreflexiblethan"who"(canrefertoinanimateobjects)butstillfollowsgrammaticalrules(e.g.,"ThecarwhichIboughtyesterdayisfast").Thetextbookprovidesexamplesof"which"asthesubject(e.g.,"Thebookwhichisonthetableismine")orobject(e.g.,"Thehousewhichweboughtisbig").三、判断题（总共10题，每题2分，共20分）1.Therelativepronoun"that"canneverbeusedinformalacademicwritingaccordingtothe9thunit.(False)Explanation:The9thunitteachesthat"that"isacceptableinformalwriting,especiallywhen"who"wouldbeawkward(e.g.,"ThebookthatIreadyesterdaywasfascinating").Thetextbookcontraststhiswith"which,"whichismoreformal,andwarnsagainstusing"who"asanobject.2.Anon-restrictiverelativeclauseisoptionalandcanbeomittedwithoutchangingthemeaningofthesentence,asexplainedinthe9thunit.(True)Explanation:Theunitexplicitlystatesthatnon-restrictiveclausesprovideextrabutnon-essentialinformationandcanbeomitted(e.g.,"Theteacher,whoisverykind,teachesEnglish").Thisisafoundationalruleforadvancedwriting,contrastedwithrestrictiveclausesthatareessential.3.Therelativepronoun"whose"canbeusedtorefertoinanimateobjects,suchas"Themountainwhosepeakisvisible."(False)Explanation:The9thunitexplicitlystatesthat"whose"isreservedforhumanoranimalpossessives(e.g.,"Thegirlwhosehairislongsangbeautifully").Thiscontrastswith"which"(inanimateobjects,e.g.,"thebookwhosecoverisblue")andotherpossessivepronouns.4.Theunitteachesthat"like"shouldbeusedinsteadof"suchas"informalwriting.(False)Explanation:The9thunitdistinguishes"suchas"(formalexamples)from"like"(colloquialcomparisons)andrecommends"suchas"inacademiccontexts(e.g.,"Manysports,suchasswimmingandbasketball,requirephysicalfitness").Thetextbookwarnsagainstusing"like"informalwriting.5.Arelativeclauseis"restrictive"ifitissetoffbycommas,asexplainedinthe9thunit.(False)Explanation:Theunitclarifiesthatrestrictiveclausesareessentialandrequirenocommas,whilenon-restrictiveclausesareoptionalandsetoffbycommas(e.g.,"Themanwholivesnextdoorismyneighbor").Thetextbookprovidesexamplestodistinguishbetweenthetwo.6.Therelativepronoun"which"canbeomittedwhentheantecedentisclear,astaughtinthe9thunit.(True)Explanation:Theunitteachesthatrelativepronouns("who,""which,""that,""whose")canbeomittedwhentheantecedentisclear(e.g.,"ThebookwhichIboughtyesterdayisinteresting").Theruleappliesonlytonounphrases,nottoverbsoradjectives.7.Theunitwarnsagainstusing"who"astheobjectofaverb,suchas"Theauthor,whoImetyesterday,isfamous."(False)Explanation:The9thunitaddressesthesubject-verbagreementrule("who"assubject,"whom"asobject)topreparestudentsforformalwriting(e.g.,"Theauthor,whomImetyesterday,isfamous").ThisisacommonerrorinadvancedEnglish,andthetextbookprovidesdrillstoreinforcethedistinction.8.Thephrase"suchas"isusedtointroducealistofexampleswithaconcludingsentence,asexplainedinthe9thunit.(True)Explanation:Theunitdistinguishes"suchas"from"like"byemphasizingitsformalusagetointroduceexampleswithoutalteringthesentencestructure(e.g.,"Manysports,suchasswimmingandbasketball,requirephysicalfitness").Thetextbookwarnsagainstusing"like"informalacademicwriting.9.Theunitteachesthat"which"canbeusedtorefertopeople,but"who"ispreferredinformalwriting.(False)Explanation:The9thunitexplainsthat"which"ismoreflexiblethan"who"(canrefertoinanimateobjects)butstillfollowsgrammaticalrules(e.g.,"ThecarwhichIboughtyesterdayisfast").Thetextbookwarnsagainstusing"which"torefertopeopleinformalwriting.10.Anon-definingrelativeclausecanchangethemeaningofthesentence,asexplainedinthe9thunit.(True)Explanation:Theunitclarifiesthatnon-definingclausesprovideadditionalbutnon-essentialinformationandcansubtlyalterthemeaning(e.g.,"Mybrother,wholivesinLondon,isvisitingusnextweek").Thetextbookcontraststhiswithdefiningclausesthatareessentialandrequirenocommas.四、简答题（总共8题，每题2分，共16分）1.Accordingtothe9thunit,whatisthedifferencebetweenarestrictiveandanon-restrictiverelativeclause?Answer:Restrictiverelativeclausesareessentialtothemeaningofthesentenceanddonotrequirecommas(e.g.,"Themanwholivesnextdoorismyneighbor").Non-restrictiverelativeclausesprovideadditionalbutnon-essentialinformationandaresetoffbycommas(e.g.,"Mybrother,wholivesinLondon,isvisitingusnextweek").Theunitemphasizesthatomittingarestrictiveclausewouldchangethemeaning,whileomittinganon-restrictiveclausewouldnot.2.The9thunitincludesthesentence"ThebookwhichIboughtyesterdayisinteresting."Whatgrammaticalruleisdemonstratedhere?Answer:Thesentencedemonstratestheuseof"which"asarelativepronountorefertoaninanimateobject("book")andastheobjectoftheverb("bought").Theunitexplainsthat"which"ismoreflexiblethan"who"(canbesubjectorobject)andisoftenpreferredinformalwriting.Thetextbookprovidesexamplesof"which"asthesubject(e.g.,"Thebookwhichisonthetableismine")orobject(e.g.,"Thehousewhichweboughtisbig").3.Whydoesthe9thunitrecommendusing"whose"onlyforhumanoranimalpossessives?Answer:Theunitexplainsthat"whose"isreservedforhumanoranimalpossessives(e.g.,"Thegirlwhosehairislongsangbeautifully")becauseitindicatesownershiporrelationship.Using"whose"withinanimateobjects(e.g.,"thebookwhosecoverisblue")isgrammaticallyincorrect,andthetextbookrecommends"which"forinanimateobjects.Thisdistinctioniscrucialforadvancedwriting.4.Howdoesthe9thunithelpstudentsavoidconfusing"who"and"whom"inrelativeclauses?Answer:Theunitaddressesthesubject-verbagreementrule("who"assubject,"whom"asobject)topreparestudentsforformalwriting(e.g.,"Theauthor,whomImetyesterday,isfamous").Thetextbookprovidesdrillstoreinforcethedistinction,suchasidentifyingtheroleoftherelativepronounintheclause(subjectorobject).ThisisacommonerrorinadvancedEnglish,andtheunitaimstocorrectit.5.The9thunitincludesthesentence"Manysports,suchasswimmingandbasketball,requirephysicalfitness."Whatisthegrammaticalfunctionof"suchas"?Answer:Theunitexplainsthat"suchas"isusedtointroduceexampleswithoutalteringthesentencestructure.Itisformalandreplacesarelativeclause(e.g.,"Manysports,suchasswimmingandbasketball,requirephysicalfitness"vs."Manysports,whichareswimmingandbasketball,requirephysicalfitness").Thetextbookwarnsagainstusing"like"informalacademicwriting.6.Whydoesthe9thunitteachstudentstoomitrelativepronounswhentheantecedentisclear?Answer:Theunitteachesthatomittingrelativepronouns("who,""which,""that,""whose")whentheantecedentisclear(e.g.,"ThebookIboughtyesterdayisinteresting")simplifiescomplexsentenceswhilepreservingmeaning.Thisisakeyskillforadvancedwriting,asitavoidsredundancy.Thetextbookprovidesexampleswhereomittingthepronounwouldcreateambiguity.7.The9thunitincludesthesentence"ThecitywhereIgrewuphasmanyparks."Whatgrammaticalstructureisdemonstratedhere?Answer:Thesentencedemonstratestheuseof"where"asarelativepronountorefertoaplace("city")andasthesubjectoftheverb("has").Theunitexplainsthatrelativeclauseswith"where"canbereducedwhentheantecedentisaplace(e.g.,"ThecitywhereIgrewuphasmanyparks").Thissimplifiescomplexsentenceswhilepreservingmeaning.8.Howdoesthe9thunithelpstudentsidentifyandcorrectoveruseofrelativeclauses?Answer:Theunitincludesexerciseswherestudentsidentifyandcorrectoveruseofrelativeclauses(e.g.,"ThefilmwhichIwatchedlastnightwasthrilling"vs."ThefilmIwatchedlastnightwasthrilling").Thetextbookemphasizesthatomittingunnecessarypronounssimplifiescomplexsentenceswhilepreservingmeaning.Thisisafoundationalskillforadvancedwriting.五、应用题（总共8题，每题4分，共32分）1.Rewritethefollowingsentencefromthe9thunit'sexercisetocorrecttheuseof"which":"Theauthorwhichwrotethebookisfamous."Answer:"Theauthorwhowrotethebookisfamous."Explanation:Theunitteachesthat"which"ismoreflexiblethan"who"(canbesubjectorobject)butstillfollowsgrammaticalrules.Inthiscase,"who"isthesubjectof"wrote,"makingitthecorrectchoice.Thetextbookcontraststhiswith"that,"whichisalsoacceptableinformalwriting.2.Rewritethefollowingsentencefromthe9thunit'sexercisetocorrecttheuseof"whose":"Thedogwhosetailwaggedwashappy."Answer:"Thedogwhosetailwaswaggingwashappy."Explanation:Theunitexplainsthat"whose"isreservedforhumanoranimalpossessives(e.g.,"Thegirlwhosehairislongsangbeautifully").Inthiscase,thecorrectformis"whosetailwaswagging,"whichindicatesthedog'saction.Thetextbookwarnsagainstusing"which"foranimalactions.3.Rewritethefollowingsentencefromthe9thunit'sexercisetocorrecttheuseof"suchas":"Manyfruits,suchlikeapplesandbananas,arehealthy."Answer:"Manyfruits,suchasapplesandbananas,arehealthy."Explanation:Theunitdistinguishes"suchas"(formalexamples)from"like"(colloquialcomparisons)andrecommends"suchas"inacademiccontexts.Thecorrectformis"suchas,"whichintroducesexampleswithoutalteringthesentencestructure.4.Rewritethefollowingsentencefromthe9thunit'sexercisetocorrecttheuseof"who"and"whom":"Theteacher,whoIspoketoyesterday,isverykind."Answer:"Theteacher,whomIspoketoyesterday,isverykind."Explanation:Theunitaddressesthesubject-verbagreementrule("who"assubject,"whom"asobject)topreparestudentsforformalwriting.Inthiscase,"whom"istheobjectof"spoketo,"makingitthecorrectchoice.Thetextbookprovidesdrillstoreinforcethedistinction.5.Rewritethefollowingsentencefromthe9thunit'sexercisetocorrecttheuseofanon-restrictiverelativeclause:"Theman,wholivesnextdoor,ismyneighbor."Answer:"Theman,wholivesnextdoor,ismyneighbor."Explanation:Theunitclarifiesthatrestrictiveclausesareessentialandrequirenocommas,whilenon-restrictiveclausesareoptionalandsetoffbycommas.Thecorrectformis"Theman,wholivesnextdoor,ismyneighbor,"whichisalreadygrammaticallycorrect.6.Rewritethefollowingsentencefromthe9thunit'sexercisetocorrecttheuseof"which":"ThebookwhichIboughtyesterdayisinteresting."Answer:"ThebookthatIboughtyesterdayisinteresting."Explanation:Theunitteachesthat"which"ismoreflexiblethan"that"(canbesubjectorobject)butstillfollowsgrammaticalrules.Inthiscase,"that"isalsoacceptableinformalwriting.Thetextbookcontraststhiswith"which,"whichismoreformal,andwarnsagainstusing"which"astheobjectofaverb.7.Rewritethefollowingsentencefromthe9thunit'sexercisetocorrecttheuseof"whose":"Themountainwhosetopisvisibleistall."Answer:"Themountainwhosetopisvisibleistall."Explanation:Theunitexplainsthat"whose"isreservedforhumanoranimalpossessives(e.g.,"Thegirlwhosehairislongsangbeautifully").Inthiscase,thecorrectformis"whosetopisvisible,"whichindicatesthemountain'sfeature.Thetextbookwarnsagainstusing"which"foranimalactions.8.Rewritethefollowingsentencefromthe9thunit'sexercisetocorrecttheuseof"suchas":"Manysports,suchlikeswimmingandbasketball,requirephysicalfitness."Answer:"Manysports,suchasswimmingandbasketball,requirephysicalfitness."Explanation:Theunitdistinguishes"suchas"(formalexamples)from"like"(colloquialcomparisons)andrecommends"suchas"inacademiccontexts.Thecorrectformis"suchas,"whichintroducesexampleswithoutalteringthesentencestructure.【标准答案及解析】一、单项选择题1.BExplanation:The9thunitfocusesonrelativeclausesasacoregrammaticalstructure,emphasizingtheirroleincomplexsentenceconstruction.OptionBiscorrectbecausetheunitexplicitlycoversrelativeclausesincomplexsentences,whileotheroptions(passivevoice,conditionalsentences,perfectcontinuoustense)arecoveredinearlierorlaterunits.2.DExplanation:Theunitsystematicallyaddressesthreecriticalaspectsofrelativeclauses:subject-verbagreement("who"assubject,"whom"asobject),tenseconsistency,andtheoptionalomissionofrelativepronouns.Masteryoftheserulesisexplicitlylistedintheunit'slearningoutcomes.3.AExplanation:Theunitdistinguishes"suchas"(formalexamples)from"like"(colloquialcomparisons)andrecommends"suchas"inacademiccontexts.OptionAiscorrectbecause"suchas"introducesexampleswithoutalteringthesentencestructure,while"like"ismorecolloquial.4.DExplanation:Theunitteachesthatomittingunnecessaryrelativeclausessimplifiescomplexsentenceswhilepreservingmeaning(e.g.,"ThefilmIwatchedlastnightwasthrilling").OptionDiscorrectbecauseitdirectlyreducestheclausewithoutchangingmeaning.5.DExplanation:Theunitemphasizesthatrelativeclauseswith"where"canbereducedwhentheantecedentisaplace(e.g.,"Thecitywevisitedlastyearhasmanyparks").OptionDiscorrectbecauseitsimplifiesthesentencewhilepreservingmeaning.6.AExplanation:Theunitexplicitlystatesthat"whose"isreservedforhumanoranimalpossessives(e.g.,"Thegirlwhosehairislongsangbeautifully").OptionAiscorrectbecause"whose"cannotrefertoinanimateobjects.7.AExplanation:Theunitteachesthatnon-restrictiverelativeclausesprovideadditionalbutnon-essentialinformationandaresetoffbycommas(e.g.,"Theteacher,whoisverykind,teachesEnglish").OptionAiscorrectbecausecommasareusedtosetoffnon-restrictiveclauses.8.DExplanation:Theunitteachesthatomittingrelativeclauseswhentheantecedentisclear(e.g.,"ThebookIboughtyesterdayisinteresting")simplifiescomplexsentenceswhilepreservingmeaning.OptionDiscorrectbecauseitomitstheunnecessarypronoun.9.AExplanation:Theunitaddressesthesubject-verbagreementrule("who"assubject,"whom"asobject)topreparestudentsforformalwriting(e.g.,"Theauthor,whomImetyesterday,isfamous").OptionA