Unit2Let'scelebrate!Usinglanguage情態(tài)動(dòng)詞課件-高一英語

Grammar---ModalsGrammar---ModalsGrammar---Modals(Ⅱ)①Asparents,theytrytokeepthatmagicalivefortheirchildrenforaslongastheycan.②Whocoulditbefrom?③Theletterswerealsobeautifullyillustrated—eachmusthavetakenitstrueauthor,Tolkien,alongtimetocomplete.④Inanotherletter,FatherChristmascomplainedabouthowhecouldnotstophishelpersplayinggameswiththetoysinsteadofwrappingthemup.⑤Interestingly,thelettersdidnotcontaintheusualwarningstochildrenthattheymightnotreceivetheirpresentsiftheywerenotgood.⑥Byexpressingloveforhischildreninsuchaspecialway,TolkienmayindeedhavebeentherealFatherChristmas.以上句子中都包含一個(gè)情態(tài)動(dòng)詞。Modals情態(tài)動(dòng)詞+do(動(dòng)詞原形)→表示對(duì)現(xiàn)在的推測(cè)情態(tài)動(dòng)詞+havedone(完成式)→表示對(duì)過去的推測(cè)Possibility:must>could>might1.他一定在辦公室里，因?yàn)槔锩娴臒袅林?.昨晚一定下雨了，因?yàn)榈孛媸菨竦摹?.他擔(dān)心他們可能不喜歡這個(gè)想法。4.她今天可能是坐火車回來的。Hemustbe/stayinhisoffice,becausethelightsinitareon.Itmusthaverainedlastnight,becausethegroundiswet.Heisafraidtheymightnotliketheidea.Shemight/couldhavecomebytrain.can/could基本用法:1.表示能力eg:Icaneasilytellmyfather’sstep.2.表示客觀上的可能性eg:Accidentscanhappentoanydrunkendriver.eg:Asahumanbeing,anyonecanmakeamistake.3.表示推測(cè)eg:Thatcan’tbeMary—she’sinNewYork.eg:Surelyyoucan’t

behungry.Youhaveonlyjusthadlunch.4.表示請(qǐng)求和許可eg:CanIgonow?eg:CouldIcometoseeyoutomorrow?may/might1.表示征求同意或許可eg:May/Might

Iplaythecomputergamesaftersupper?2.表示推測(cè)

(語氣較弱,might比may更具有不確定性)Johnisabsent.Hemay/might

beill.They

mighthavealotofworktodonowbutI’mnotsure.3.用于祈使句中表示祝愿

（May+主語+動(dòng)詞原形+其他）Mayyouhaveagoodtime!（祝你玩得開心?。㎝ayyousucceed!（祝你成功?。㎝ayGodblessyou!（愿上帝保佑你！）Mayyourdreamscometrue!（愿你的夢(mèng)想成真?。㎝ayyoualwaysbehealthyandhappy!（愿你永遠(yuǎn)健康快樂?。㎝ayyoureturnsoon.（愿你早日歸來！）must1.表示肯定的推測(cè)Youmustbeverytiredafteryourlongjourney.2.表示“必須”Youmustn’tdothat,becauseyoumustkeepyourword.3.表示“偏偏;偏要”ThecarmustbreakdownjustwhenIwasabouttostart.我正要出發(fā)時(shí)車偏偏拋錨了。情態(tài)動(dòng)詞+havedone1.can/could/may/might/must+havedone”表示對(duì)過去發(fā)生的事情的推測(cè)a.Itmusthaverainedlastnight,fortheroadisquitemuddy.b.Youshouldhavetoldmeearlier.c.Theycouldhavesentupthesatellitesuccessfully.昨晚一定下雨了,因?yàn)槁泛苣酀簟Ｄ惚緫?yīng)該早點(diǎn)告訴我。他們本來能成功發(fā)射這顆衛(wèi)星的①musthavedone表示對(duì)過去發(fā)生的事情十分肯定的推測(cè)。②can/couldhavedone表示“本來能夠做某事但卻未做”或表推測(cè)。③may/mighthavedone用于肯定句和否定句,表示對(duì)過去發(fā)生某事的可能性的推測(cè)。④should/oughttohavedone表示“本該做某事而實(shí)際上未做”;否定式表示“本不該做但卻做了”。⑤needn’thavedone表示“做了本來不必做的事”。句子語法填空①Thereisnolightintheroom.She

havegonetosleep.

②Lucy

(may)cometotheparty.ButIamnotsureaboutit.

③Itusedtosnowinwinterandwe

(can)playwithsnowintheyard.

mustmightcould1.Ifyouplanonworkingoutinagym,thatperson

belongtothesamegym.(2022年新高考全國Ⅰ卷,七選五)

must1.must考查情態(tài)動(dòng)詞。根據(jù)句意可知,此處表示“必須”。2.Butasdayspassed,thearugulawentbad.Evenworse,Ihadunthinkinglyboughtwaytoomuch;I____________

(make)sixsaladswithwhatIthrewout.(2022年新高考全國Ⅰ卷,閱讀B)

couldhavemade2.couldhavemade考查情態(tài)動(dòng)詞。根據(jù)句意可知,此處couldhavedone表示對(duì)過去發(fā)生的事情的推測(cè)。3.John,

wegosomeplaceandtalk?It’ssonoisyinhere.(2022年全國甲卷,聽力)

can’t3.can’t考查情態(tài)動(dòng)詞。根據(jù)句意可知,此處表示請(qǐng)求和許可。情態(tài)動(dòng)詞填空1.

_______

Iuseyourmobilephone?

2.I

belateorDadwillgoupthewall.

3.We

eatinarestaurant,ifyoulike.

4.You

beverytiredafteraday’swork.Pleasehavearest.

May/Can/Couldmustn’tcanmust5.You

(may)haveforgottenmyname,Sir.IamJulia.

6.TomcomesfromAustralia:he

speakEnglishverywell.

7.—CanyousingthisEnglishsong?—Sorry,I

.

8.I

cometothepartywithyou,butIamnotsure.

mightcan/mustcan’tmight9.You

havebeenmorecareful.

10.Mary

playtheviolinwhenshewasfive.

11.Asyouarehere,you

aswellstayandmakethebestofit.

12.It’stoolate.Ithinkhe

havegonetobed.

13.You

firewithoutanysignal.

14.Mary

havereceivedmyletter,otherwiseshewouldhaverepliedbeforenow.

15.

yougoodluck.

oughtto/shouldcouldmay/mightmaymustn’tcouldn’tMay翻譯句子：1．他一定正在教室里做練習(xí)。（mustbedoing）___________________________________________________________________________.2．他不可能去了上海，剛才我還看見他了。（can’thavedone)__________________________________________________________________________.3．不要吃這些蘑菇，它們可能有毒。（coulddo）__________________________________________________________________________.4．他今天下午可能不來。（mightdo）___________________________________________________________________________.5．屋里很冷，他們一定把暖氣關(guān)了。（musthavedone）____________________________________________________________________________.6．布朗先生一向準(zhǔn)時(shí)。這次開幕式他怎么可能遲到呢？(cando)_____________________________________________________________________________.

Hemustbedoinghisexercisesintheclassroom.

Hecan'thavegonetoShanghaiforIsawhimaminuteago.

Don'teatthesemushrooms.Theycouldbepoisonous.

Hemightnotcomethisafternoon.

Itiscoldintheroom.Theymusthaveturnedofftheheating.

Mr.Brownisontimeforeverything.Howcanhebelatefortheopeningceremony?Tomwashavingclassintheclassroomwhensomeoneknockedatthedoor.

“Who___1_________itbe?

It

____________

2 betheheadteacher,becauseheisattendingameeting.It_____3_____bemymathsteacher.”Hewaslostinthought.Whenthedoorwasopened,Tomfounditwashismother.“You

4_______ havesomethingimportant,