人教七下英语专题must和have-to(易错考点回顾+闯关提分训练)

第1页【易错考点回顾】must和haveto【易错点睛】1.表示必须此时可用于肯定句、否定句或疑问句，用于否定句时，mustn’t的意思是“一定不要、不能”。如：Youmustfinishtheworktonight.你必须今晚完成这项工作。Adverbsmustn’tbeputbetweentheverbandtheobject.副词不能放在动词和宾语之间。2.表示推测意为“一定是”，通常只用于肯定句，表示有把握的肯定推测。如：Jane’slightison.Shemustbeathome.简的房间里开着灯。她一定在家。3.must与haveto的区别must侧重于说话者的主观看法，认为有必要或有义务去做某事Everyonemustkeepthelaw.人人都要守法。haveto则重于客观需要，含有“不得不”“被迫”之意Thelasttrainhasgone.We’llhavetowalkhome.最后一班车已经开了，我们得走回家了。从时态方面看，must只有现在时一种形式，而haveto则有多种时态形式。如：Youwillhavetoshowyourpapersatthegate.在大门口你得出示证件。【典型错题】IfyouknownothingaboutthefamousprogramcalledWherearewegoing,dad?,you_____belivinginabox!A.wouldB.canC.mustD.need【错因分析】本题的关键是对语境的理解，对句意的把握会直接影响能否正确判断空格处所缺情态动词的意思。其次，如果没有掌握选项中四个情态动词的用法，也会影响正确作答。【思路点拨】首先要理解题干中句子的意思，然后弄清楚四个选项中情态动词的用法，再结合句意判断空格处要表达的是肯定推测“一定是”，再结合选项得出正确答案。【注意】对于must开头的一般疑问句，若作否定回答，可以用needn’t，不能用mustn’t。如：—MustIcleanalltherooms?这些房间我都得清扫吗?—No,youneedn’t.不，不必。第2页【正确答案】正确答案为C。句意：如果你对《爸爸去哪儿了》这个著名的节目一无所知，那你一定是生活在盒子里。根据上文提示此空是表示肯定的推测，“一定是”要用情态动词must，故选C。【中考链接】1.(2019重庆)You_______stopwhenthetrafficlights(交通灯)turnred.A.can'tB.mayC.mustD.needn't【答案】C解析：句意：交通灯变红时你______停车。A.can’t不能，B.may可能，C.must必须，D.needn't不必，根据句意，答案选C。2.(2019福建)—Mum,mayIgoswimmingnow?—Yes,dear,butrememberthatyou______gowithyourdad.A.mayB.canC.must【答案】C解析：句意：——妈妈，我现在可以去游泳吗?——是的，亲爱的，但是记住你必须和你爸爸一起去。may可以；can可能；must必须。根据语境可知这里用must。故选C。3.（2019黔西南州）—MustIleavenow?It’sstillraininghardoutside.—No,you______.Youcanwaittilltherainstops.A.don’thavetoB.couldn’tC.can’tD.shouldn’t【答案】A解析：句意：——我必须现在离开吗？外面还在下雨。——不，你不必．你可以等到雨停。don'thaveto不必；couldn't不能；can’t不能；shouldn’t不应该。在回答以must开头的一般疑问句时，肯定回答用Yes,sb.must，否定回答用No,sb.needn't或don'thaveto，结合句意，答案选A。【闯关提分训练】must和haveto1.—Canyougoshoppingwithusthisafternoon?—Sorry,Ican’t.I______lookaftermylittlesister.A.canB.mayC.haveto2.—MayIsmokehere?—No,you________.Thisisano-smokingroom.第3页A.needn’tB.mustn’tC.needD.wouldn’t3.Someoneisknockingatthedoor.It______bemymother.It’stimeforhertobeback.A.canB.maynotC.mustD.mustn't4.You_____takemetothestation.Mybrother’stakingme.A.can’tB.mustn’tC.shouldn’tD.don’thaveto5.—Sorry,MissLiu.Ileftmyworkbookathome.MustIhanditin(上交它)today?—No,you______.You______bringitheretomorrow.A.mustn’t;shouldB.can’t;mustC.mustn’t;mayD.needn’t;can6.—Excuseme,sir,visitinghours(探视时间)areover.You_____leave.—Pardonme(对不起),nurse.Ididn’thearthebell(铃声).A.mayB.canC.mustD.need7.Thechildren______playbasketballontheroad.A.can’tB.canC.mustn’tD.must8.You______goandseeadoctoratoncebecauseyougotafever(发烧).A.canB.mustC.dareD.would9.—Mum,mustIfinishthehomeworknow?—No,you______.Youcandoitaftersupper.A.needn'tB.mustn'tC.can'tD.maynot10.(2019盐城一模）Sorry!Ican'tfollowyou.I____finishmyhomeworkfirst.A.canB.mayC.mustD.could11.(2019·济南三模)—MustIanswerthequestioninEnglish?—No,you_______.A.can'tB.mustn'tC.needn'tD.shouldn't12.Yesterdayitrainedheavilywhenschoolwasover.We_____stayinourclassroomA.mustB.shouldC.hadtoD.need13.Ican’tgowithyou.I______stayathomeuntilmyparentscomeback.A.canB.mayC.mustD.could14.—MustIfinishtheworktoday?—No,you______.Butyou______finishitnextMonday.第4页A.mustn’t;mustB.needn’t;mustC.mustn’t;couldD.needn’t;could15.—______you______wearyoursportsshoesforP.E.class?—Yes,wedo.A.Have;toB.Do;haveC.Do;havetoD.Does;haveto16.—MayIgooutnow,Dad?—Well,you_________finishyourschoolworkfirst.A.canB.mayC.needD.must17.—Whycan’tNancycometoyourparty?—Becauseshe______doherhomework.A.canB.can’tC.hastoD.doesn’thaveto18.(2019河西区一模)Mike_____finishtheworkatonce.Hecanfinishittomorrow.A.mustB.havetoC.shouldn'tD.doesn'thaveto19.Weshouldn'tarrivelateforclass.We______beontime.A.mustB.mayC.couldD.can20.Itisinthelibrary.You__________talkloudly.A.maynotB.wouldn'tC.needn'tD.mustn't参考答案：1.C2.B3.C4.D5.D6.C7.C8.B9.A10.C11.C12.C13.C14.B15.C16.D17.C18.D19.A20.D