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SectionHI语法突鲤/［语法初钠］［语法剧析］.情态动词表推想的三种句式⑴在确定句中一般用must肯定may可能might/could或许，或许Atthistimemyfathermustbeworkinginhisofficeisnthe在这个时候，我父亲肯定正在办公室工作，是吗？Hewasafraidtheymightnotagreewithhim.他担忧他们可能不同意他的意见2否认句中用cant/couldnt不行能maynot/mightnot可能不TheycantbeatworknowforIsawthemeatingintherestaurantjustnow.他们现在肯定没有在上班，由于我刚刚观察他们在餐馆吃饭Hemay/mightnotknowthescientist.他或许不熟悉那位科学家3疑问句中用can/could能Couldhehavefinishedthetask他可能把任务完成了吗？Canhebeathomenow他现在能在家吗？.情态动词表推想的三种时态1对将来状况的推想用“情态动词+动词原形〃Shemust/may/might/couldarrivebefore5oclock.500前她肯定/可能/或许到2对现在或一般状况的推想用“情态动词+be〃，“情态动词+bedoing〃或“情态动词+动词原形〃Hemust/may/might/couldbelisteningtotheradionow.他肯定/可能/或许正在听收音机MrBushisontimeforeverything.Howcancouldhebelatefortheopeningceremony布什先生一向准时，这次开幕式他怎么可能迟到呢？⑶对过去状况的推想，用“情态动词+have+过去分词〃Itmusthaverainedlastnight.Thegroundiswet.地面湿了，昨晚确定下雨了Hecannothavebeentothattown.他不行能去过那个镇
3.情态动词表推想的特殊用法lcan除了表推想，用于疑问句和否认句中外，还可以表示“在某段时间内一时的可能件〃CItcanbequitewindythereespeciallyinspring.那里有时简单刮风，特殊在春季2must表示“肯定，非得；偏要〃，剧烈语气Ifyoumustsmokeyoucansmokeinthatroom.假如你偏要吸烟，你可以在那个房间吸集中演练］用适工菊情态动词填空
①Lifeisunpredictable;eventhepoorestmay/mightbeetherichest.
②MyunclecantbeathomeforhehasgonetoBeijingonbusiness.3Sincenobodygavehimanyhelphemusthavedonetheresearchonhisown.
④IhaventdecidedwhereImgoingformyholiday.Imay/mightgotoFrance.
⑤一Looksomeoneising.Whocan/coulditbe—IthinkitmustbeTombecausehesaidhewouldbehereatthistime.的用法⑴表示过去一般的力量即想做某事就随时可以做某事的力量CouldyouspeakEnglishthen那时候你会说英语吗？［名师点津］假设表示在过去特定场合做某事的力量，那么不能用could而用was/wereabletooThefirewasverybigbuteveryonewasabletoescapefromthebuilding.火势很凶狠，但大家都逃了出来2could表示推想，表示某事有可能发生或可能是事实在确定句中没有must那么有把握；在否认句中没有cant那么有把握Hecouldn*tbeabadman.他不大可能是坏人3could还可以用于表示客气、委婉或礼貌的恳求语气Couldyoupickmeupattheairportat5a.m.nextMonday下周一早上五点你能到机场接我吗？Imafraidthatwecouldn*tgiveyouanydefiniteansweratthismoment.唯恐我们这时还无法给您任何准确的答复4could的否认式与比拟级连用表示最高级Noonecouldbemoregenerous;hehasaheartofgold.没人比他更慷慨；他有一颗金子般的心5couldhavedone表示“可能已经……〃此外，它还可以表示“本能够做某事而没有做〃，暗含惋惜之情Youcouldhavedoneitwellbutyouweretoocareless.你本可以做好的，但是你太马虎了Wherecouldshehavegonelastnight她昨晚可能到哪里去了呢？should的用法1表示劝说和建议，意为“应当〃此时ughtto比should语气要强Youshould/oughttoputmoreeffortintoyourwork.你应当更加努力地工作2表示推想用于确定句，表示按常规、常理的推想，意为“按理说应当〃HeleftParisinthemorning.Soheshouldarriveherebysuppertime.他早上离开巴黎，因此他晚饭前应当能到3表示惊异、意外等心情，意为“竟然〃Itisstrangethatsuchthingsshouldhappeninourschool.真惊奇，这样的事情竟然在我们学校发生了4shouldnot+havedoneshouldhavedone本应当做某事，但事实上却没有做；shouldn11havedone“本不该做某事，但事实上做了〃Youshouldhavegotupearlier.你本应当早点起床的Youshouldnthavetoldhimaboutit.你本不该把这件事告知他的would的用法1表示意愿，在陈述语气和虚拟语气中都可用ItoldPeterthatIwouldgoalongwithhim.我告知彼得我要跟他一块去2表示恳求、建议等，would比w川委婉客气在疑问句中用于其次人称Wouldyoupleasetellmethewaytothenearestbus-stop你可以告知我去最近的公共汽车站的路吗？3表示习惯，意为“总是，习惯于〃与usedto相比，would表示过去重复、习惯性动作；而usedto那么强调过去与现在的比照LastyearourEnglishteacherwouldtellusstoriesinEnglishafterclass.去年我们的英语老师经常课后给我们用英语讲故事Heusedtospendallhismoneyonfoodanddrink;nowhelivesasimplelife.他过去把钱都花在吃喝上，现在他过着简朴的生活集中演练2选词填空couldshouldwould
①Weshouldalwayslendahandtothosewhoarelessfortunatethanweare.
②Idon!tlikefishsoIwouldnoteatitunlessIwasextremelyhungry.
③Itcouldnotbethevocabularythatcausedyoutheproblemintheexercisebecauseyouknowalotofwords.©Youcantimaginethatawell-behavedgentlemanshouldbesorudetoalady.
⑤Everytimeshewasintroubleshewouldturntohimforhelp.
⑥Hedidnotregretsayingwhathedidbutfeltthathecouldhaveexpresseditdifferently.
⑦IshouldhaveattendedSusansbirthdaypartylastnightbutIpletelyforgotaboutit.§1couldnothaveenjoyedmyselfmore-itwasaperfectday.［铤接密考］单句语法填空（2016•浙江高考单项选择改编）Georgecant（go）toofar.Hiscoffeeisstillwarm.解析havegone考查情态动词跟完成时表示对过去的推想句意乔治不行能走太远，他的咖啡仍是温的canthavegone意为“不行能走（远）〃，是对过去状况的否认推想，符合语境（2016•天津高考单项选择改编）Itwasreallyannoying;Igetaccesstothedatabankyouhadremended.解析couldnt考查情态动词句意真令人恼火我不能进入你推举的数据库依据“Itwasreallyannoying”可知应用couldnt（2015•福建高考单项选择改编）一SorryMum!Ifailedthejobinterviewagain.一Ohitstoobad.Youhavemadefullpreparations.解析should考查情态动词句意“对不起，妈妈！我工作面试又没过〃“哦，真是太糟糕了你本该做好充分预备的〃表示“本应当做某事（实际并未做）〃用shouldhavedone故填shouldo（2015•陕西高考单项选择改编）YoufeelallthetrainingawasteoftimebutImahundredpercentsurelateryoullbegratefulyoudidit.解析may考查情态动词句意你或许觉得全部的训练都是铺张时间，但是我百分之百确信，你以后会感谢自己做过的一切may“或许，可能〃（2015・重庆高考单项选择改编）YoubeCarol.Youhaventchangedabitafteralltheseyears.解析must考查情态动词表推想句意你肯定是凯罗尔这么多年你一点儿都没变依据语境可知，此处表示确定的推想，故用must“肯定〃［针对演炼］I.用适当的情态动词填空ItisusuallywarminmyhometowninMarchbutitcanberathercoldsometimes.Davidsaidhewoulddoasmuchashecouldtohelpus.Hemay/mighthavesaidsoatthemeetingbutImnotsure.Yourmothermusthaveknownthegoodnews.Shelooksquitehappy.YesterdayyoushouldhaveattendedthemeetingbutwhatwasthereasonforyourabsenceWhenhewastherehewouldgotothatcoffeeshopatthecornerafterworkeveryday.HecanthavegonetoShanghaiforIsawhimaminuteago.Itmay/mightsoundlikeaperfectdestinationbutitisreallyadventuroustogothere.Iwasreallyanxiousaboutyou.Youshouldnthavelefthomewithoutaword.Youcouldhavedonebetterbutyoudidnttryyourbest.H.完成句子WhenSusanwasonlysevenyearsoldshecouldspeak（能说）threeforeignlanguages.YourbrotherisdoinghishomeworkinhisroomsoyoushouldturntheTVdown（应当把电视声音关小）.JohnsfathertoldhimnottoplayvideogamesbutJohnwouldnt.listen」（不听）him.Theyshould/1havetold（本不应当告知）herthetruth.Looksheiscryingoverthere.Tonycouldhavecaught（原来能赶上）thetrainontimebutthetaxibrokedownhalfway.Theymusthavegotlost（肯定迷路X）intheforest.Otherwisetheywouldhavearrivedhereasscheduled.ni.短文改错Allmyfamilywerestayingathomewiththeairconditionerturningon.Suddenlyweheardaloudnoiseinthehallasifsomethingfallsontherushedoutonlytofindtheweaksparrowlyingonthepeopleingitwantedtofly.Andafteritflapped（振）itswingitcouldnt.Itmusthavefelttoohotthatitwantedtofindacoolerplace.Fortunatelyitdidntseeourglasswindowsandwashittodizzy.Sowegotitinsideandprovideditsomewater.Afterawhilethesparrowopeneditseyesandseemedmuchwell.答案第一句turning-turned其次句falls-fell第三句第一个the-a第五句And-But;wing-swings第六句too^so第七句Fortunately^Unfortunately;去掉to第八句water前加with第九句well^better7，彳LrGrammar—-复习情态动词原句感知自主探究
①Thetopicofthepoemcantbetravel.
②Itmustbesomethingmorepersonal.
③Itmaybefriendship.©Itmightbethejourneythroughlife.
⑤LiBaimusthavehadastrangelife.@Hecanthavebeeninterestedinanormallife.©Hemayhavediedwhenhefelloutofaboat.
⑧Youshouldreadthepoemsometime.
⑨Couldyouanswerafewquestionsplease⑩Itoldhertostopsingingbutshewouldntlisten.1句
①〜
⑦中黑体局部在句中均作整理；其中句
⑤〜
⑦表示对过去所发生的事情的推想2句
⑧表示说话人的意愿，意为“应当〃，句
⑨表示“恳求〃，句⑩表示意愿。
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