2025-2026年重庆市北师大版九年级英语第12单元语法练习题

2025-2026年重庆市北师大版九年级英语第12单元语法练习题一、单项选择题（总共10题，每题2分，共20分）1.Thenewlibraryinourschool______openedlastmonthandithasbecomethemostpopularplaceforstudentstostudy.A.was|B)were|C)hasbeen|D)hadbeen解析：本题考查动词时态。根据句意“学校的新图书馆上个月开放了，它已经成为学生最常去的地方”，需用现在完成时态表示动作完成且与现在有关。选项A为一般过去时，不符合句意；选项B为复数形式错误；选项C为现在完成时，符合语境；选项D为过去完成时，表示过去动作对现在的影响，但句中无时间先后关系。故选C。2.IfI______you,Iwouldstudyharderforthefinalexambecausethedifficultyofthetestisgettinghigher.A.am|B)were|C)amgoingtobe|D)willbe解析：本题考查虚拟语气。根据句意“如果我是你，我会为期末考试更努力学习，因为考试难度越来越高”，是典型的If条件句的虚拟语气，主句用would+动词原形，从句用一般过去时。选项A、C、D不符合虚拟语气结构。故选B。3.______youfinishyourhomework,youcanwatchTVforanhour.A.Assoonas|B)Until|C)Before|D)After解析：本题考查时间状语从句。根据句意“你一完成作业就可以看一小时电视”，需用assoonas表示“一……就……”。选项B、C、D分别表示“直到”“在……之前”“在……之后”，均不符合句意。故选A。4.Theteachertoldthestudentsthatthey______lateforthemeetingagainortheywouldlosethechancetoattendtheconference.A.mustn’tbe|B)needn’tbe|C)shouldn’tbe|D)can’tbe解析：本题考查情态动词。根据句意“老师告诉学生他们不能再迟到，否则会失去参加会议的机会”，需用mustn’t表示“禁止”。选项B、C、D分别表示“不需要”“不应该”“不能”，语气或含义不符。故选A。5.Mybrother______totheconcertlastnight,buthewastootiredtoenjoyit.A.went|B)hasgone|C)hadgone|D)wasgoing解析：本题考查动词时态。根据句意“我哥哥昨晚去音乐会了，但他太累了，没能享受”，强调过去发生的动作，用一般过去时。选项B为现在完成时，选项C为过去完成时，选项D为过去进行时，均不符合语境。故选A。6.Ifit______tomorrow,wewillhavetocancelthepicnic.A.won’train|B)doesn’train|C)won’tberaining|D)isn’training解析：本题考查If条件句。根据句意“如果明天不下雨，我们就得取消野餐”，主句用一般将来时，从句用一般现在时。选项A、C、D时态错误。故选B。7.Theboy______hisbikewhenhesawthepolicecar.A.wasriding|B)rode|C)hasbeenriding|D)hadbeenriding解析：本题考查动词时态。根据句意“那个男孩看见警车时正在骑自行车”，强调过去某个时间点正在进行的动作，用过去进行时。选项B为一般过去时，选项C、D为完成时态，均不符合。故选A。8.______hardyoutry,youwon’tsucceedifyoudon’tfollowtherightmethod.A.Nomatterhow|B)However|C)Whatever|D)Whenever解析：本题考查让步状语从句。根据句意“无论你多么努力，如果你不采用正确的方法都不会成功”，需用nomatterhow表示“无论多么”。选项B、C、D分别表示“无论如何”“无论什么”“无论何时”，均不符合。故选A。9.Thecompanydecidedto______thefactorybecauseitwastoooldandinefficient.A.closedown|B)turndown|C)setup|D)expand解析：本题考查动词短语。根据句意“由于工厂太旧且效率低下，公司决定关闭它”，closedown表示“关闭”。选项B为“拒绝”，选项C为“建立”，选项D为“扩张”，均不符合。故选A。10.IfI______$1,000nextyear,Iwillbuyanewcar.A.earn|B)willearn|C)amgoingtoearn|D)earned解析：本题考查If条件句。根据句意“如果我明年赚了1000美元，我会买一辆新车”，主句用一般将来时，从句用一般现在时。选项B、C、D时态错误。故选A。二、填空题（总共10题，每题2分，共20分）1.Thestudentsweresurprisedwhenthey______(find)theexamanswersontheteacher’sdesk.参考答案：found解析：根据句意和when引导的时间状语从句，需用一般过去时。2.She______(study)EnglishforfiveyearsbeforeshemovedtoLondon.参考答案：hadstudied解析：根据before引导的时间状语从句，主句用过去完成时。3.Ifyou______(notlisten)totheteachercarefully,youwillmisstheimportantinformation.参考答案：don’tlisten解析：If条件句主句用一般将来时，从句用一般现在时，否定形式需加not。4.Thebaby______(sleep)whenthedoorbellranglastnight.参考答案：wassleeping解析：根据when引导的时间状语从句，强调过去某个时间点正在进行的动作，用过去进行时。5.______you______(be)ontime,thetrainwillleavewithoutyou.参考答案：If/are解析：If条件句主句用一般将来时，从句用一般现在时。6.Mysister______(go)tothesupermarketthismorning,butsheforgottobuymilk.参考答案：went解析：根据thismorning，用一般过去时。7.TheteachertoldusthattheEarth______(go)aroundtheSun.参考答案：goes解析：宾语从句用一般现在时。8.Ifit______(rain)tomorrow,wewillplaybasketballinsteadofwatchingTV.参考答案：doesn’train解析：If条件句主句用一般将来时，从句用一般现在时。9.Thestudents______(notfinish)theirhomeworkwhenthepowerwentoutlastnight.参考答案：didn’tfinish解析：根据when引导的时间状语从句，用一般过去时，否定形式需加not。10.______you______(try)hard,youwon’tsucceedintheexam.参考答案：Nomatterhow/try解析：Nomatterhow引导让步状语从句，主句用一般将来时，从句用一般现在时。三、判断题（总共10题，每题2分，共20分）1.Thecompanywillclosedownthefactorynextmonthbecauseitistooexpensivetomaintain.(×)解析：根据句意，需用一般将来时，但原句为现在时，错误。2.IfIhadstudiedharderlastyear,Iwouldhavepassedtheexam.(×)解析：这是对过去的虚拟，主句用wouldhave+过去分词，但原句为would+动词原形，错误。3.Shewasreadingabookwhenthephonerangyesterday.(√)解析：句子时态和语态正确，符合语境。4.Youcan’tgotothepartyunlessyouwearaformaldress.(√)解析：unless表示“除非”，与句意一致。5.Thestudentshavefinishedtheirproject,sotheycanrelaxnow.(×)解析：根据so表示因果关系，主句需用一般现在时，但原句为现在完成时，错误。6.Ifitrainstomorrow,wewillcancelthepicnic.(√)解析：If条件句时态正确，符合语境。7.Theboyhasbeenridinghisbikesincehesawthedog.(×)解析：since表示“自从”，主句需用一般过去时，但原句为现在完成时，错误。8.Youmustn’tleaveyourbaghereorsomeonewillstealit.(√)解析：mustn’t表示“禁止”，符合语境。9.Theteachertoldusthatwewouldhaveatestnextweek.(×)解析：宾语从句用一般现在时，但原句为一般将来时，错误。10.Nomatterhowhardyoutry,youcan’tsucceedinlife.(×)解析：Nomatterhow引导让步状语从句，主句需用一般将来时，但原句为一般现在时，错误。四、简答题（总共8题，每题2分，共16分）1.Explainthedifferencebetween"will"and"begoingto"inthecontextofpredictions.参考答案："Will"isusedforpredictionsbasedonpresentevidenceorgeneralstatements,while"begoingto"isusedforpredictionsbasedonpastevidenceorintentions.Forexample,"Itwillraintomorrow"(basedonweatherforecast),"Heisgoingtobuyacar"(basedonhisrecentsavings).2.Howcanyouformasentenceusingthestructure"assoonas"?参考答案："Assoonas"isusedtoconnecttwoclauseswherethefirstactionhappensimmediatelyafterthesecond.Example:"AssoonasIfinishmyhomework,Iwillgoout."3.Whatisthefunctionof"mustn’t"inasentence?参考答案："Mustn’t"isusedtogivestrongadviceorwarnings,meaning"mustnot."Example:"Youmustn’ttouchthehotstove."4.Whydoweusethepastcontinuoustenseinsentenceslike"Themanwascookingwhenthedoorbellrang"?参考答案：Thepastcontinuoustenseisusedtodescribeanongoingactionthatwasinterruptedbyanotheractioninthepast.Example:"Themanwascooking(ongoingaction)whenthedoorbellrang(interruptingaction)."5.Howdoyouformasentencewithaconditionalclausetype2(hypotheticalsituation)?参考答案：Type2conditionalsentencesdescribehypotheticalsituationsinthepresentorfuture.Structure:If+presentsimple,would+baseverb.Example:"IfIhadmoremoney,Iwouldbuyahouse."6.Whatdoes"unless"meaninasentence?参考答案："Unless"means"ifnot"or"exceptif,"introducingaconditionthatmustbemet.Example:"Youcan’tenterunlessyouhaveaticket."7.Whyisthepresentperfecttenseusedinsentenceslike"Shehaslivedhereforfiveyears"?参考答案：Thepresentperfecttenseisusedtodescribeanactionthatstartedinthepastandcontinuestothepresent.Example:"Shehaslivedhere(continuingaction)forfiveyears."8.Howdoyouformasentenceusing"so"toshowaresult?参考答案："So"isusedtoconnecttwoclauseswherethesecondclauseshowsaresultofthefirst.Example:"Itrainedheavily,sowestayedinside."五、应用题（总共8题，每题4分，共24分）1.Rewritethefollowingsentenceusingthepresentperfecttense:"Thestudentsfinishedtheprojectyesterday."参考答案：Thestudentshavefinishedtheproject.解析：根据yesterday，用现在完成时。2.Completethesentencewiththecorrectformof"must"or"mustn’t":"You______touchtheelectricalwiresbecausetheyaredangerous."参考答案：mustn’t解析：表示禁止，用mustn’t。3.Changethefollowingsentencetothepastcontinuoustense:"Heisreadingabooknow."参考答案：Hewasreadingabookthen.解析：根据then，用过去进行时。4.Writeasentenceusing"assoonas"todescribeyourdailyroutine.参考答案：AssoonasIwakeup,Idrinkacupofcoffee.解析：描述时间顺序，用assoonas。5.Formasentencewithaconditionalclausetype1(realpossibility):"Ifitrains,wewillplayoutside."参考答案：Ifitrainstomorrow,wewillplayoutside.解析：描述未来可能情况，用一般现在时和一般将来时。6.Completethesentencewiththecorrectformof"will"or"begoingto":"I______studyhardernextsemesterbecausemygradesarelow."参考答案：amgoingto解析：根据nextsemester，用begoingto。7.Writeasentenceusing"unless"to