2026年江苏省北师大版初中英语第11单元语法专项训练习题

2026年江苏省北师大版初中英语第11单元语法专项训练习题一、单项选择题（每题2分，共20分）1.The11thunitofthe2026JiangsuBeishidueditionjuniorhighschoolEnglishtextbookfocusesonthegrammaticalstructureof"can/could"forabilityandpermission.Whichsentencecorrectlyexpressesability?A.Shecangototheconcertbecauseherparentsagreed.B.Hecan’tfinishhishomeworkbecauseheistired.C.Couldyouhelpmecarrythisbag?D.CanIborrowyourpenforamoment?Answer:BExplanation:OptionBcorrectlyuses"can’t"toexpressinability,aligningwiththeunit’sfocusonability.OptionAuses"can"forpermission,optionCuses"could"forapoliterequest,andoptionDuses"can"forpermission.Thequestionteststhedistinctionbetween"can"and"can’t"forability,acoreconceptinthe11thunit.2.Inthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit,thegrammarpoint"must/mustn’t"fornecessityandprohibitionisintroduced.Whichsentencecorrectlyexpressesprohibition?A.Youmuststudyhardfortheexam.B.Studentsmustn’tleavetheclassroomwithoutpermission.C.Shemustfinishherprojecttoday.D.Wemustgotothelibrarynow.Answer:BExplanation:OptionBcorrectlyuses"mustn’t"toexpressprohibition,akeygrammarpointinthe11thunit.OptionAuses"must"fornecessity,optionCuses"must"forurgency,andoptionDuses"must"forobligation.Thequestionassessesthestudent’sabilitytodifferentiatebetween"must"and"mustn’t"fornecessityandprohibition.3.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitincludesthegrammarstructure"should/shouldn’t"foradviceandrecommendations.Whichsentencegivesadvice?A.Youshouldn’teattoomuchjunkfood.B.Heshouldarriveontimeforthemeeting.C.Sheshouldcallhermotherimmediately.D.Theyshouldnotgotothepartytonight.Answer:BExplanation:OptionBcorrectlyuses"should"togiveadvice,aprimaryfocusinthe11thunit.OptionAuses"shouldn’t"forprohibition,optionCuses"should"forurgency,andoptionDuses"shouldnot"forprohibition.Thequestionteststhestudent’sunderstandingof"should"foradvice.4.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitcoversthemodalverb"may/might"forpossibility.Whichsentenceexpressespossibility?A.Shemaybelateforthetrain.B.Hemaynotpasstheexam.C.Youmaygototheparktomorrow.D.Theymayhavefinishedtheirhomework.Answer:AExplanation:OptionAcorrectlyuses"may"toexpresspossibility,akeygrammarpointinthe11thunit.OptionBuses"maynot"forpossibility,optionCuses"may"forpermission,andoptionDuses"mayhave"forpastpossibility.Thequestionassessesthestudent’sabilitytouse"may"forpossibility.5.Inthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit,thegrammarstructure"haveto"fornecessityistaught.Whichsentencecorrectlyexpressesnecessity?A.Ihavetofinishmyhomeworknow.B.Shehastogotothedoctortomorrow.C.Hehastocallhisfriendlater.D.Theyhavetoleavetheroomsoon.Answer:AExplanation:OptionAcorrectlyuses"haveto"toexpressnecessity,acoreconceptinthe11thunit.OptionBuses"hasto"fornecessity,optionCuses"hasto"forurgency,andoptionDuses"haveto"forurgency.Thequestionteststhestudent’sunderstandingof"haveto"fornecessity.6.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitintroducesthegrammarstructure"hadbetter"forstrongadvice.Whichsentencegivesstrongadvice?A.Youhadbetterstudyforthetest.B.Hehadbetternotmissthebus.C.Shehadbettergotobedearly.D.Theyhadbetterleavesoon.Answer:BExplanation:OptionBcorrectlyuses"hadbetternot"togivestrongadvice,akeygrammarpointinthe11thunit.OptionAuses"hadbetter"foradvice,optionCuses"hadbetter"forurgency,andoptionDuses"hadbetter"forurgency.Thequestionassessesthestudent’sabilitytouse"hadbetter"forstrongadvice.7.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitcoversthemodalverb"needn’t"forlackofnecessity.Whichsentencecorrectlyexpresseslackofnecessity?A.Youneedn’tworryabouttheproblem.B.Sheneedn’tgototheparty.C.Heneedn’tfinishhisworktoday.D.Theyneedn’tleaveearly.Answer:AExplanation:OptionAcorrectlyuses"needn’t"toexpresslackofnecessity,aprimaryfocusinthe11thunit.OptionBuses"needn’t"forlackofnecessity,optionCuses"needn’t"forurgency,andoptionDuses"needn’t"forurgency.Thequestionteststhestudent’sunderstandingof"needn’t"forlackofnecessity.8.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitintroducesthegrammarstructure"might"forpossibilityinuncertainsituations.Whichsentenceexpressespossibility?A.Hemightbeatthelibrarynow.B.Shemightnothaveseentheemail.C.Youmightgotothestorelater.D.Theymighthavefinishedtheirdinner.Answer:AExplanation:OptionAcorrectlyuses"might"toexpresspossibilityinanuncertainsituation,akeygrammarpointinthe11thunit.OptionBuses"mightnot"forpossibility,optionCuses"might"forpermission,andoptionDuses"mighthave"forpastpossibility.Thequestionassessesthestudent’sabilitytouse"might"forpossibility.9.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitcoversthemodalverb"oughtto"forstrongadvice.Whichsentencegivesstrongadvice?A.Yououghttoapologizeforyourmistake.B.Heoughtnottoeattoomuchsugar.C.Sheoughttocallherteacherimmediately.D.Theyoughtnottoleavethepartyearly.Answer:AExplanation:OptionAcorrectlyuses"oughtto"togivestrongadvice,aprimaryfocusinthe11thunit.OptionBuses"oughtnotto"forprohibition,optionCuses"oughtto"forurgency,andoptionDuses"oughtnotto"forprohibition.Thequestionteststhestudent’sunderstandingof"oughtto"forstrongadvice.10.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitintroducesthegrammarstructure"begoingto"forfutureplans.Whichsentenceexpressesafutureplan?A.Sheisgoingtovisithergrandparentsnextweek.B.Heisgoingtofinishhishomeworktonight.C.Theyaregoingtoleavesoon.D.Iamgoingtocallmyfriendlater.Answer:AExplanation:OptionAcorrectlyuses"isgoingto"toexpressafutureplan,akeygrammarpointinthe11thunit.OptionBuses"isgoingto"forafutureplan,optionCuses"aregoingto"forimmediacy,andoptionDuses"amgoingto"forafutureplan.Thequestionassessesthestudent’sabilitytouse"begoingto"forfutureplans.二、填空题（每空2分，共20分）1.Inthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit,thesentence"You______(can)swimverywell"shouldbefilledwiththecorrectmodalverbtoexpressability.Answer:canExplanation:Thesentenceshoulduse"can"toexpressability,acoregrammarpointinthe11thunit.Thecorrectformis"Youcanswimverywell."2.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitteachesthesentence"He______(mustn’t)leavetheroomwithoutpermission"toexpressprohibition.Answer:mustn’tExplanation:Thesentenceshoulduse"mustn’t"toexpressprohibition,akeygrammarpointinthe11thunit.Thecorrectformis"Hemustn’tleavetheroomwithoutpermission."3.Inthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit,thesentence"You______(should)studyharderfortheexam"givesadvice.Answer:shouldExplanation:Thesentenceshoulduse"should"togiveadvice,aprimaryfocusinthe11thunit.Thecorrectformis"Youshouldstudyharderfortheexam."4.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitintroducesthesentence"She______(may)belateforthemeeting"toexpresspossibility.Answer:mayExplanation:Thesentenceshoulduse"may"toexpresspossibility,akeygrammarpointinthe11thunit.Thecorrectformis"Shemaybelateforthemeeting."5.Inthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit,thesentence"You______(haveto)finishyourhomeworktonight"expressesnecessity.Answer:havetoExplanation:Thesentenceshoulduse"haveto"toexpressnecessity,acoreconceptinthe11thunit.Thecorrectformis"Youhavetofinishyourhomeworktonight."6.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitteachesthesentence"He______(hadbetternot)missthetraintomorrow"forstrongadvice.Answer:hadbetternotExplanation:Thesentenceshoulduse"hadbetternot"togivestrongadvice,akeygrammarpointinthe11thunit.Thecorrectformis"Hehadbetternotmissthetraintomorrow."7.Inthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit,thesentence"You______(needn’t)worryabouttheproblem"expresseslackofnecessity.Answer:needn’tExplanation:Thesentenceshoulduse"needn’t"toexpresslackofnecessity,aprimaryfocusinthe11thunit.Thecorrectformis"Youneedn’tworryabouttheproblem."8.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitintroducesthesentence"She______(might)beatthelibrarynow"toexpresspossibilityinanuncertainsituation.Answer:mightExplanation:Thesentenceshoulduse"might"toexpresspossibilityinanuncertainsituation,akeygrammarpointinthe11thunit.Thecorrectformis"Shemightbeatthelibrarynow."9.Inthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit,thesentence"You______(oughtto)apologizeforyourmistake"givesstrongadvice.Answer:oughttoExplanation:Thesentenceshoulduse"oughtto"togivestrongadvice,aprimaryfocusinthe11thunit.Thecorrectformis"Yououghttoapologizeforyourmistake."10.The2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunitteachesthesentence"They______(begoingto)visittheirgrandparentsnextweek"toexpressafutureplan.Answer:aregoingtoExplanation:Thesentenceshoulduse"aregoingto"toexpressafutureplan,akeygrammarpointinthe11thunit.Thecorrectformis"Theyaregoingtovisittheirgrandparentsnextweek."三、判断题（每题2分，共20分）1.Thesentence"Youcan’tgotothepartybecauseyouaresick"correctlyuses"can’t"toexpressinability,agrammarpointcoveredinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"can’t"toexpressinability,aligningwiththeunit’sfocusonability.2.Thesentence"Hemustfinishhishomeworknow"correctlyuses"must"toexpressnecessity,agrammarpointtaughtinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"must"toexpressnecessity,acoreconceptinthe11thunit.3.Thesentence"Sheshouldcallhermotherimmediately"correctlyuses"should"togiveadvice,agrammarpointintroducedinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"should"togiveadvice,aprimaryfocusinthe11thunit.4.Thesentence"Hemightbeatthelibrarynow"correctlyuses"might"toexpresspossibility,agrammarpointcoveredinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"might"toexpresspossibilityinanuncertainsituation,akeygrammarpointinthe11thunit.5.Thesentence"Youhavetoleavetheroomsoon"correctlyuses"haveto"toexpressnecessity,agrammarpointtaughtinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"haveto"toexpressnecessity,acoreconceptinthe11thunit.6.Thesentence"Hehadbetternotmissthetraintomorrow"correctlyuses"hadbetternot"togivestrongadvice,agrammarpointintroducedinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"hadbetternot"togivestrongadvice,akeygrammarpointinthe11thunit.7.Thesentence"Youneedn’tworryabouttheproblem"correctlyuses"needn’t"toexpresslackofnecessity,agrammarpointcoveredinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"needn’t"toexpresslackofnecessity,aprimaryfocusinthe11thunit.8.Thesentence"Sheoughttoapologizeforhermistake"correctlyuses"oughtto"togivestrongadvice,agrammarpointtaughtinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"oughtto"togivestrongadvice,aprimaryfocusinthe11thunit.9.Thesentence"Theyaregoingtovisittheirgrandparentsnextweek"correctlyuses"begoingto"toexpressafutureplan,agrammarpointintroducedinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:TrueExplanation:Thesentencecorrectlyuses"begoingto"toexpressafutureplan,akeygrammarpointinthe11thunit.10.Thesentence"Youmaygotothepartytomorrow"correctlyuses"may"toexpresspermission,agrammarpointcoveredinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:FalseExplanation:Thesentenceincorrectlyuses"may"toexpresspermission."May"isusedforpossibility,notpermission.Thecorrectformforpermissionwouldbe"Youmaygotothepartytomorrow"(ifthecontextallows).四、简答题（每题2分，共16分）1.Explainthedifferencebetween"can"and"could"forabilityinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Can"isusedtoexpresspresentability,while"could"isusedtoexpresspastabilityormakearequestmorepolitely.Forexample,"Shecanswim"(presentability)vs."Shecouldswim"(pastabilityorpoliterequest).2.Describehow"must"and"haveto"areusedfornecessityinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Must"expressesstrongnecessity,while"haveto"expressesnecessityinfluencedbyexternalfactors.Forexample,"Youmustfinishyourhomework"(strongnecessity)vs."Youhavetofinishyourhomework"(externalrequirement).3.Explaintheuseof"should"foradviceinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Should"isusedtogiveadviceormakerecommendations.Forexample,"Youshouldstudyharder"(advice).4.Describehow"may"and"might"areusedforpossibilityinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"May"isusedforpresentpossibility,while"might"isusedforpastoruncertainpossibility.Forexample,"Hemaybelate"(presentpossibility)vs."Hemighthavebeenlate"(pastpossibility).5.Explaintheuseof"mustn’t"forprohibitioninthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Mustn’t"isusedtoexpressstrongprohibition.Forexample,"Youmustn’tleavetheroomwithoutpermission"(strongprohibition).6.Describehow"hadbetter"isusedforstrongadviceinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Hadbetter"isusedtogivestrongadvice.Forexample,"Youhadbetternotmissthetrain"(strongadvice).7.Explaintheuseof"needn’t"forlackofnecessityinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Needn’t"isusedtoexpresslackofnecessity.Forexample,"Youneedn’tworry"(noneedtoworry).8.Describehow"begoingto"isusedforfutureplansinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Begoingto"isusedtoexpressfutureplansorintentions.Forexample,"Theyaregoingtovisittheirgrandparents"(futureplan).五、应用题（每题4分，共24分）1.Rewritethefollowingsentenceusingthecorrectmodalverbtoexpressability:"Sheisgoodatplayingthepiano."Answer:"Shecanplaythepianoverywell."Explanation:Thesentenceshoulduse"can"toexpressability,akeygrammarpointinthe11thunit.2.Rewritethefollowingsentenceusingthecorrectmodalverbtoexpressprohibition:"Youshouldnoteattoomuchsugar."Answer:"Youmustn’teattoomuchsugar."Explanation:Thesentenceshoulduse"mustn’t"toexpressprohibition,acoreconceptinthe11thunit.3.Rewritethefollowingsentenceusingthecorrectmodalverbtogiveadvice:"Heneedstostudyharderfortheexam."Answer:"Heshouldstudyharderfortheexam."Explanation:Thesentenceshoulduse"should"togiveadvice,aprimaryfocusinthe11thunit.4.Rewritethefollowingsentenceusingthecorrectmodalverbtoexpresspossibility:"Hecouldbeatthelibrarynow."Answer:"Hemaybeatthelibrarynow."Explanation:Thesentenceshoulduse"may"toexpresspresentpossibility,akeygrammarpointinthe11thunit.5.Rewritethefollowingsentenceusingthecorrectmodalverbtoexpressnecessity:"Youhavetofinishyourhomeworktonight."Answer:"Youmustfinishyourhomeworktonight."Explanation:Thesentenceshoulduse"must"toexpressnecessity,acoreconceptinthe11thunit.6.Rewritethefollowingsentenceusingthecorrectmodalverbtogivestrongadvice:"Youhadbetternotmissthetraintomorrow."Answer:"Yououghtnottomissthetraintomorrow."Explanation:Thesentenceshoulduse"oughtnotto"togivestrongadvice,aprimaryfocusinthe11thunit.六、案例分析（每题2分，共18分）1.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Afriendasks,"CanIborrowyourpen?"Answer:"Yes,youmayborrowmypen."Explanation:Theresponseshoulduse"may"toexpresspermission,akeygrammarpointinthe11thunit.2.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Ateacherwarns,"Youmustnotleavetheclassroomwithoutpermission."Answer:"Youneedn’tleavetheclassroomwithoutpermission."Explanation:Thesentenceshoulduse"needn’t"toexpresslackofnecessity,aprimaryfocusinthe11thunit.3.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Aparentadvises,"Youshouldstudyforthetest."Answer:"Yououghttostudyforthetest."Explanation:Thesentenceshoulduse"oughtto"togiveadvice,aprimaryfocusinthe11thunit.4.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Astudentpredicts,"Hemightbelateforthemeeting."Answer:"Hemaybelateforthemeeting."Explanation:Thesentenceshoulduse"may"toexpresspresentpossibility,akeygrammarpointinthe11thunit.5.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Afriendasks,"CanIgototheparty?"Answer:"Yes,youmaygototheparty."Explanation:Theresponseshoulduse"may"toexpresspermission,akeygrammarpointinthe11thunit.6.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Ateacheradvises,"Youhadbetterstudyharder."Answer:"Youshouldstudyharder."Explanation:Thesentenceshoulduse"should"togiveadvice,aprimaryfocusinthe11thunit.7.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Astudentpredicts,"Shemaynotpasstheexam."Answer:"Shemightnotpasstheexam."Explanation:Thesentenceshoulduse"mightnot"toexpresspossibility,akeygrammarpointinthe11thunit.8.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Aparentwarns,"Youmustnoteattoomuchjunkfood."Answer:"Youneedn’teattoomuchjunkfood."Explanation:Thesentenceshoulduse"needn’t"toexpresslackofnecessity,aprimaryfocusinthe11thunit.9.Readthefollowingscenarioandrewritethesentenceusingthecorrectmodalverb:Scenario:Afriendasks,"CanIborrowyourbook?"Answer:"Yes,youmayborrowmybook."Explanation:Theresponseshoulduse"may"toexpresspermission,akeygrammarpointinthe11thunit.---七、论述题（每题2分，共22分）1.Discusstheimportanceofmodalverbsinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:Modalverbsareessentialinthe11thunitastheyexpressability,permission,necessity,advice,andpossibility,allowingstudentstoconveynuancedmeaningsinEnglish.Forexample,"can"expressesability,"must"expressesnecessity,and"should"givesadvice.Understandingtheseverbshelpsstudentscommunicatemoreeffectively.2.Explainhowmodalverbsdifferfromotherverbsinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:Modalverbsdifferfromotherverbsbecausetheydonotchangeform(e.g.,"can’t"vs."don’tcan").Theyexpressmodality(e.g.,ability,permission)andarefollowedbythebaseformoftheverb(e.g.,"shouldstudy").Otherverbshaveregularforms(e.g.,"can’t"vs."cannot").3.Discusstheuseof"can"and"could"forabilityinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Can"isusedforpresentability(e.g.,"Shecanswim"),while"could"isusedforpastability(e.g.,"Shecouldswim")orpoliterequests(e.g.,"Couldyouhelpme?").Understandingthisdistinctioniscrucialforeffectivecommunication.4.Explaintheuseof"must"and"haveto"fornecessityinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Must"expressesstrongnecessity(e.g.,"Youmustfinishyourhomework"),while"haveto"expressesnecessityinfluencedbyexternalfactors(e.g.,"Youhavetofinishyourhomeworkbecausetheteachersaidso").Thedistinctionhelpsstudentsconveydifferentlevelsofobligation.5.Discusstheuseof"should"foradviceinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Should"isusedtogiveadvice(e.g.,"Youshouldstudyharder"),makingitaprimaryfocusinthe11thunit.Studentslearntouse"should"toofferhelpfulsuggestions.6.Explaintheuseof"may"and"might"forpossibilityinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"May"isusedforpresentpossibility(e.g.,"Hemaybelate"),while"might"isusedforpastoruncertainpossibility(e.g.,"Hemighthavebeenlate").Understandingthisdifferencehelpsstudentsexpressuncertaintymoreaccurately.7.Discusstheuseof"mustn’t"forprohibitioninthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Mustn’t"isusedforstrongprohibition(e.g.,"Youmustn’tleavetheroom"),akeygrammarpointinthe11thunit.Studentslearntouse"mustn’t"toexpressstrictrulesorwarnings.8.Explaintheuseof"hadbetter"forstrongadviceinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Hadbetter"isusedforstrongadvice(e.g.,"Youhadbetternotmissthetrain"),akeygrammarpointinthe11thunit.Studentslearntouse"hadbetter"togiveurgentorimportantadvice.9.Discusstheuseof"needn’t"forlackofnecessityinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Needn’t"isusedforlackofnecessity(e.g.,"Youneedn’tworry"),aprimaryfocusinthe11thunit.Studentslearntouse"needn’t"toexpressthatsomethingisnotrequired.10.Explaintheuseof"begoingto"forfutureplansinthe2026JiangsuBeishidujuniorhighschoolEnglishtextbook’s11thunit.Answer:"Begoingto"isusedforfutureplansorintentions(e.g.,"Theyaregoingtovisittheirgrandparents"),akeygrammarpointinthe11thunit.Studentslearntouse"begoingto"toexpress