Unit+2+Let's+Celebrate!+Using+language+Grammar+情态动词课件 高中英语外研版必修第二册

Lead-in回归第1单元学习的情态动词can,couldmust,havebeabletodareneed课堂小练1.—Idon’treallylikeJames.Whydidyouinvitehim?—Don’tworry.He______come.Hesaidhewasn’tcertainwhathisplanswere.A.mustnot B.neednotC.wouldnot D.mightnot2.Thetrafficisheavythesedays.I_____arriveabitlate,socouldyousavemeaplace?A.canB.mustC.needD.might3.Oneofthefewthingsyou_____sayaboutEnglishpeoplewithcertaintyisthattheytalkalotabouttheweather.A.needB.mustC.shouldD.canDDD课堂小练选词填空(包含否定式)can,could,may,might,must(可重复选)1.Helen

goonatripwithus,butsheisn’tquitesure.2.Mysistermethimatthetheatrelastnight,sohe

haveattenededyourlecture.3.-IamsureIsawBrianintheparkthismorning.-You

beimaginingthings.HeleftforAmericalastnight.4.We

havefacethediffcultytogether,butwhydidn’tyoutellme?5.Ifyou_______smoke,pleasegooutside.may/mightcan’t/couldn’tmustmustcould1.Thewordsinboldindicatepossibility.2.

Ifwereplace"could"with"must",themeaningofsentence(a)willchange.Itmeansthespeakerisquitesureaboutthestatement.ifwereplace"could"with"might",themeaningofsentence(a)willremainmoreorlessthesame."Could"and"might"inaffirmativesentenceshaveasimilarmeaningwhenindicatingpossibility.3.Ifwechangemust"insentence(b)into"could",itmeansthespeakerisnotsureaboutthestatement,andit'sonlyapossibility.Ifwechange"might"insentence(c)into"could",itmeansit'simpossibleforthechildrentoreceivetheirpresents.Thechildrenmusthavebeenveryexcitedastheyopenedit.Thechildrencouldhavebeenveryexcitedastheyopenedit.…theymightnotreceivetheirpresentsiftheywerenotgood.…theycouldnotreceivetheirpresentsiftheywerenotgood.……surenotsosurepossibleimpossibleRewritetheunderlinedsentencesintheconversationusingcan/could,may/might

andmust.Youmustbetirednow!Itmay/might/couldbehim.ThatmustbeLucy.Thatcan'tbeLucy.Theymay/might/couldbefromourschool.P222Lookatthepictureandmakeasmanysentencesaspossibleusingcan/could,may/might

andmust.Themanwithawalletinhishandmightbeabitreluctanttopay.Thecashiermightbefeelinguncomfortableasheissweatingalot.Possibleanswers!Thewomaninred

mustbe

veryexcitedtobuysomanythings.Thewomanwithglassesmaybeverytiredtogetupsoearlyandcarrysomanybags.P2231.Theletterswerealsobeautifully-illustrated-----each_______________(take)itstrueauthor,Tolkien,alongtimetocomplete.2.Inanotherletter,FatherChristmascomplainedabouthowhe____________(stop)hishelpersplayinggameswiththetoysinsteadofwrappingthemup.3....aswellasenjoyingtheadventures...,we___________allsharethetruespiritofgivingatChristmastime.4....Tolkien______________(be)therealFatherChristmas.Fillintheblankswithappropriatewords.cancouldnotstopmusthavetakenmayhavebeen(1)may/mighthavedone

1.“情态动词+have+V-ed”①Theymighthavegotlost.②

Youmayhavemisheardher─I'msureshedidn'tmeanthat.他们可能迷路了。表示对已发生事情的不肯定推测你可能听错她的话了——我肯定她不是这个意思。①Emmamusthavebeenveryupset.②

Ithinkwemusthavetakenawrongturningsomewhere.(2)musthavedone

表示对已发生情况的推测，通常用于肯定句艾玛一定很难过。我觉得我们一定是在什么地方拐错了路。might比may更加不确定①Youcan’thaveforgottenher.②

Wherecanshehaveputit?(3)canhavedone

表示对已发生情况的推测，通常用于否定句或疑问句你不可能已经忘了她。她到底把它放在哪儿了呢？①

Couldshehaveforgottenmyaddress?②

Hecouldnothavebeenmorethan16atthattime.(4)couldhavedone

表示对过去情况的推测，多用于否定句或疑问句她会忘记我的地址吗？他当时不可能超过16岁。1.—The14-year-oldgirlwonagoldmedalattheOlympicGames.—She_________havetrainedveryhardbeforethematch.2.—IsawNancyinthestreet.—It_______________havebeenher,forshehasgonetoShanghaiforabusinessmeeting.mustcan't/couldn't情态动词对现在和未来的推测对过去的推测使用句型MustMust+动词原形Musthavedone肯定句May/mightMay/might+动词原形May/mighthavedone肯定句，否定句Can/couldCan/could+动词原形Can/couldhavedone否定句，疑问句（could可用于肯定句