外研八下U3 情态动词 核心语法精练（学生版）

考点概览·知识回顾情态动词本身有词义，表示说话人的态度和看法，不能独立作谓语，后接动词原形。常见情态动词用法如下：\)情态动词用法例句should建议、劝告（应当）Youshouldtalktoyourparentsaboutyourfeelings.hadbetter最好（否定：hadbetterYouhadbetternottellOliver.can/could能力、请求许可（could更委CanIborrowyourbike?/Icouldswimatfive.must必须（主观），否定mustn't表示禁止Youmustwearaseatbelt./Youmustn'tparkhere.haveto不得不（客观），否定don'thaveto表示不必Ihavetogonow./Youdon'thavetoworry.need需要（常用于否定、疑问句），否定needn't表示不必NeedIgo?/Youneedn'twait.注意：must引导的一般疑问句，肯定回答用must，否定回答用needn't/don'thaveto。need还可作行为动词，后接todo。must与haveto的区别：must侧重于主观看法，haveto侧重于客观需要；must无人称时态变化，haveto有人称时态变化。一、单项选择1．1．You______besorudetoyourparents.Theyloveyousomuch.A．shouldn'tB．needn'tC．maynotD．don'thaveto2．---Mom,Ifeelterrible.---You______eattoomuchjunkfood.Let'sgotoseeadoctor.A．wouldn'tB．shouldn'tC．needn'tD．don'thaveto3．---Wearegoingtothecitylibrary.---Great!We______keepquiettheretorespectothers.A．shouldB．mayC．havetoD．could4．You______touchtheexhibitsinthemuseum.It'sstrictlyforbidden.A．mustn'tB．needn'tC．wouldn'tD．couldn't5．You______saysorrytoyoursisterforbreakingherfavoritetoy.Itwasnotniceofyou.6．---Dad,it'ssohot.______Igoswimmingwithmyfriends?---No,you______.Thewateristoocold.A．Could;mustn'tB．Need;couldn'tC．Must;needn'tD．Should;can't7．Thenotebook______beAmy'sbecausehernameiswrittenonthecover.8．---Look!That______beMr.Chen.---No,it______behim.Heisonabusinesstrip.A．may;mustn'tB．must;maynotC．must;can'tD．can;maynot9．---CanIplayvideogamesnow,Dad?---No,you______.Youmustfinishyourhomeworkfirst.A．mustn'tB．can'tC．couldn'tD．needn't10．---______Iborrowyourpen,Lily?---Ofcourse,youcan.Hereyouare.A．ShouldB．MustC．NeedD．Can11．---Couldwewatchamovienow?---No,you______.Youmustdoyourchoresfirst.A．needn'tB．won'tC．mustn12．---MustIfinishthereporttoday?---No,you______.Youcan______ituntilFriday.A．needn't;keepB．needn't;finishC．mustn't;keepD．mustn't;finish13．---Whatcanwedofortheelderly?---You______domuch.Justspendingtimewiththemisenough.A．needn'tB．maynotC．wouldn'tD．mustn't14．---Ms.Li,mustIhandinthecompositionnow?---No,you______.YoucangiveittomenextMonday.A．mustn'tB．shouldn'tC．won'tD．needn't15．Nowadays,peopleinbigcities______carrymuchcashbecausetheycanpaywiththeirphones.A．needn'tB．mustn'tC．shouldn'tD．can't16．Smarthomedevicesarebecomingpopularbecausewe______worryaboutforgettingtoturnofflights.A．can'tB．needn'tC．mustn'tD．shouldn't17．Duetotheheavysnow,we______stayathomeallday.A．havetoB．mayC．canD．might18．---Icandriveyoutothestation.---Thankyou,butyou______.I'lltakethesubway.AA．don'thavetoB．mustn'tC．can'tD．shouldn't19．Youlookexhaustedafterthelongwalk.Actually,you______keepwalking.There'sabenchoverthere.A．mustn'tB．don'thavetoC．can'tD．shouldn't20．Hey,kids,we______takethisgametooseriously—it'sjustforfun!A．shouldB．don'thavetoC．mustD．mustn't21．---Mytoothhurtsalot.---You'dbetter______adentistrightaway.22．---It'sgettingdarkoutside.You'dbetter______outalone.---OK,Mom.A．goB．nottogoC．notg23．---Ihavedifficulty______Englishpronunciation.---Well,you'dbetter______toEnglishsongsmoreoften.A．improving;listenB．improving;tolistenC．improve;listenD．improve;tolisten24．---Ihaveaheadache.WhatshouldIdo?---You'dbetter______somerest.25．Katefeltverytiredyesterday.She'dbetter______tobedearly.二、改写句子1．1．Youshouldtakeabreakafterworkingforhours.（改为否定句）You___________takeabreakafterworkingforhours.2．Weshouldsavewaterinourdailylife.（改为一般疑问句）___________we___________waterinourdailyli3．Couldyoupleaseopenthewindow?（改为否定句）Couldyouplease___________thewindow?4．Canyouhelpmecarrythebox?（换一种更有礼貌的表达）___________you___________mecarrythebox?5．Whataboutplayingbasketballafterschool?（用could改写句子）___________we___________basketballafterschool?6．Youmustreturnthebooksontime.（改为一般疑问句）___________I___________7．Hehadbettergotothedoctor.（改为否定句）He____________________8．Youneedtofinishyourhomeworkbeforedinner.（改为一般疑问句）___________I___________tofinishmyhomeworkbeforedinner?9．MayIuseyourphone?（作肯定回答）10．Wehavetoleavenowbecauseit'sgettinglate.（改为否定句）We______________________toleavenowbecauseit'sgettinglate.三、完成句子1．父母应该鼓励孩子多读书。Parentsshould___________theirchildren2．你最好早点起床，以免错过早班车。You___________getupearlysothatyoudon'tmisstheearlybus.3．你现在应该避免吃太多甜食。Youshould___________eatingtoomuchsweetfoodfornow.4．你下次不应该对老师这么没礼貌。You___________besoimpolitetotheteachernexttime.5．过马路时一定要小心，注意来往车辆。You______________________carefulwhencrossingtheroad,andwatchoutforthetraffic.6．我们不必今天完成这项工作。We______________________tofinishthisworktoday.7．我能借你的自行车吗？___________Iborrow8．他可能不知道这个消息。He___9．你最好不要一个人去那里。You______________________gotherealone.10．我们不得不因为大雨取消了比赛。We______________________cancelthematchbecauseoftheheavyrain.一、语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。Inasmalltown,therelivedaboynamedLeo.Oneday,onhiswayhome,hesaw[1]______injuredbirdlyingontheground.Leothoughthe[2]______(should)helpit.Hecarefullypickeditupandtookithome.He[3]______(name)thebirdLucky.Hetookcareofit[4]______(patient),andtheybecamethe[5]______(good)friends.Soon,Leodecidedtohelpotheranimalstoo.Hebecameavolunteeratthelocalanimalshelter."Ialwayswanttodosomethingmeaningful,sowhynot[6]______(work)foranimals?"saidLeo."Volunteeringis[7]______(good)waytodothat.Thepeopletherearereallyhelpful,andit'snicetofindhomes[8]______animals."Leohelpedtheanimalswith[9]______(he)hardwork,andhisstoryshowedthatwe[10]______(can)makeabigdifferenceifwetry.二、选词填空阅读短文，从方框中选择适当的词并用其正确形式填空，使短文通顺、意思完整。每空限填一词，每词限用一次。exciting,as,understand,difficult,though,stand,high,real,story,giveThanksThankstoawonderful[1]______,lotsofpeoplenowknowandlikeaChinesehero!ThemovieaboutMulanisverypopularinChinaandaroundtheworld.Itbecomesoneofthe[2]_______-grossinganimatedfilms.Thestoryinthemovieis[3]______anditcomesfromanoldChinesepoem.ItisaboutagirlnamedMulanwhotakesherfather'splacei