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Modalverbs•IcanspeakEnglish.•Youmaygonow.•Theworkmustbefinishedassoonaspossible.•Shallwestartthemeetingnow?•Hewon’tgowithus.•IcanspeakEnglish.•Youmaygonow.•Theworkmustbefinishedassoonaspossible.•Shallwestartthemeetingnow?•Hewon’tgowithus.1.Bookingsmustbemadeatleastsevendaysbeforetheyleave.2.Myeyesightisverypoor.Ihavetowearglassesforreading.3.Mustyouplaythepianoatmidnight?强调主观看法强调客观需要偏要，非要must/havetoinnerdesireoutsideconditionorimposingsomeonetodo…havetomustImuststudyhard.Ihavetostudyhard.may/might1.Youmaytakethisseatifyoulike.2.---May/MightIcomeintotheroomtoseemymother?---Yes,please/Certainly.3.NBAison.hemightbewatchingTVnow.givingpermissionaskingpermissionpossibilitycan/could1.Thecinemacanseat(容纳)1,000people.2.IcouldnotreadsuchaneasybookwhenIwas7yearsold.abilityability3.---CouldIuseyourdictionary？---Yes,goahead.（或Yes,youcan.但不能说Yes,youcould.4.Could/Canyoutellmehowtogotothezoo?5.Thehuntershavebeenlostfordays.Theycouldstarve.askingpermissionrequestpossibilitydifferencebetween“can”and“beableto”•can表示“能力”时，和beableto相当，许多场合可互换。但当具体到某一次能力如何只能用beableto。Canyouspeakanyforeignlanguages？Areyouabletoworkoutthisproblemwithin10minutes？differencebetween“can”and“beableto”大火迅速蔓延到整幢大楼，但大家都逃了出来。Thefirespreadthebuildingquicklybuteverybody____________escape.=Thefirespreadthebuildingquicklybuteverybodymanagedtoescape.wasabletobeableto强调克服困难经过努力实现的事情。。1)Noonecould/wasabletoanswerthequestion.2)Whenhegrowsup,hewillbeabletosupporthisfamily.3)Frankisill.Hehasn’tbeenabletogotoschoolforoneweek.4)I'msorryfornotbeingabletohelpyouintime.beableto比can有更多形式。Fillintheblankswithmust,haveto,may,might,can,could.1.They________putoffthesportsmeetingbecauseofthebadweather.2.Accordingtothelandlord,I________haveacatinthisapartment.3.We_______doeverythingstepbystep.4.Teachers_______bepatientenoughwiththeirstudents.havetocan/maymustmust(permission)5.How______youbesostupid?6.Whatawarddidyougetforthesportscompetition?___________Ihavealook?7.Jimisn'tgoodatmathsorscience,buthe______speakEnglishverywell.8.--Whowasthemantalkingwithyourteacher?--Iamnotsure.It_______beherbrother.canCould/Maycanmightshall1.ShallIcarryitforyou?2.Shalltheywaitoutside?•用于_________人称疑问句,表示说话人征求对方的意见或向对方请示，___________________________________________________________。一，三shall3.YoushalldoasIsay.4.Youshallfallbehindinyourexamifyoukeepplaying.5.HeshallhavethebookwhenIfinishreading.•用于第________人称陈述句中,表示说话人给对方命令、警告、允诺、威胁或决心等意思。二、三should1.Childrenshouldobeytheirparents.2.Idon'tknowwhyyoushouldthinkIdidit.3.10.It'snearlyseveno'clock.Jackshouldbehereatanymoment.adviceprediction常与what,how,why等词连用，表示意外、惊讶等情绪。这里表竟然will/would1.Willyouhavesometea?2.Wouldyouhavesometea?3.Iwilldoanythingforyou.4.HewillsurftheInterneteverynight.7.Hewouldgotothebarafterworkwhenheworkedinthatcity.requestrequestpromiseintentionhabitpasthabitwill/would1.Thewindowwon'topen.2.Thisglasswillnotcrackunderheavypressure.3.Ifyouwillreadthebook,I'lllendittoyou.4.IfIwereyou,Iwouldbeathiminthematch.上面哪句话与fishwilldiewithoutwater一致。Exercises:Choosefromshould,shall,will,wouldtocompletethesentences.1._________wesithere?我们坐这儿好吗？2._________youstayforlunch?你留下来吃午饭，好吗？3.Oilandwater________notmix.油和水混不起来。4.________youdomeafavor?你能帮我个忙吗？ShallWouldwillWouldExercises:Choosefromshould,shall,will,wouldtocompletethesentences.5.They________beherebynow,Ithink.我想现在他们都到了。6.I________nevertellyouthesecret.我决不告诉你这个秘密。7.He________sitthereforhoursdoingnothingatallwhenhewasachild.当他是个小孩的时候他经常坐在那什么也不做。8.Why________youtalktoherlikethat?你为什么（竟然）这样和她说话？shouldwillwouldshouldExercises:Choosefromshould,shall,will,wouldtocompletethesentences.9.Thewound________notheal.伤口老不愈合。10.He________bepunishedifhedoesitagian.。willshallExercises:1.--Where’sSally?Shemustbe/shouldbeherebynow.--Idon’tknowwhat’shappenedtoher.Maybeshemissedthebus.2.A:Canyouhelpmewiththeseletters?B:Mustwedo/Shouldwedothemnow?Can’ttheywaituntilthemorning?A:No.It’salreadytoolate.3.Wewereverysurprised.Tombehavedinsucharudemanner.=WeweresurprisedthatTomshouldbehaveinsucharudemanner.竟然4.IfIcan’tleavemybagshere,whatdoyousuggestmetodowiththem?=WhatshouldIdowiththem?5.It’sadvisabletocheckthatallthewindowsareshutwheneveryougoout.=Youshouldcheckthatallthewindowsareshutwheneveryougoout.6.Regulartrainingisessentialifyouwanttosucceedinathletics.=Youhavetohaveregulartrainingifyouwanttosucceedinathletics.Exercises:7.Isuggestit’sagoodideatocheckthetimetablebeforeweleave.=Weshouldcheckthetimetablebeforeweleave.8.Inmyopinionitwouldbewrongforthemtomovehousenow.=Idon’tthinktheyshouldmovehousenow.9.Itistheruletowearahelmetwhenyourideamotorbike.=Youmustwearahelmetwhenyourideamotorbike.Exercises:10.Iexpecthe’llbeherenowbecausehetoldmetoarriveatthistime.=Heshouldbeherenow.11.We’verunoutofmilk.Imustgetsomeinthesupermarket.12.You’dbetternotcarrythatheavysuitcase.Ifyoudo,youmightinjureyourback.Exercises:13.Thiscarpetwaspricedat$500,butIcould/wasabletogetadiscountbecauseofthislittlemarkinthecorner.14.Thedaystartedoffmisty,butbythetimewehadreachedthemountainthesunhadappearedandwecould/wereabletoclimbitquitequickly.15.——Wouldyou