2023學(xué)年完整公開課版情態(tài)動詞

情態(tài)動詞考點歸納1.常用情態(tài)動詞的用法比較1)在表示“可能性”方面

must,can,should,may,might都可以用于表示“可能性”。a.must表示以事實為依據(jù)而進(jìn)行的邏輯上的推理，它所指的動作或狀態(tài)發(fā)生的可能性最大。b.can和should表示以事實、理由為依據(jù)而進(jìn)行猜測，它們所指的動作有發(fā)生的可能性，但語氣沒有must那么肯定。其中，should的主觀性較強(qiáng)。c.may和might語氣較弱，表示說話人根據(jù)自己的主觀判斷而進(jìn)行的猜測。其中，might的語氣更弱一些。2)在表示“允諾”方面

can,may,might都可以表示“允諾”，其中might最為客氣、委婉。如：

YoucanwatchTVforaslongasyoulike.MayIuseyourphoneplease?MightIpossiblyborrowyourumbrellaplease?3)在表示“應(yīng)該”方面

must,oughtto,should都能用來表示“出于某種職責(zé)、義務(wù)而應(yīng)該”的意思。must的語氣最強(qiáng)烈，oughtto居中，而should是表達(dá)這方面意思的普通詞。如：

Youmustcutdownonsmoking.Yououghttovisityourparentsmoreoften.Youshouldtrythatnewrestaurant.2.情態(tài)動詞的特殊用法1)shall用于第一人稱表示堅強(qiáng)的信念和決心；用于第二、三人稱，表示許諾、命令或規(guī)定等。如:Weshallnotfail.Ifyoureallywantadog,youshallhaveone.Sheshallnotstayundermyroof.Candidatesshallremainintheirseatsuntilallthepapershavebeencollected.2)should表示驚訝等感情,意為“竟然”。

如：

It'soddyoushouldmentionBen!Iwasjustthinkingabouthim.3)must表示說話人的不滿，意為“偏要,硬要”。如：

Ericmustcomeandworrymewithquestions,justwhenIambusycookingthedinner.Ifyoumustsmoke,pleasegooutside.4)may表示祝愿;mayaswell用來提出建議,意為“還是……的好”;maywell用來表示可能性，意為“很可能”。如：

Mayyoubehappy!Youmayaswelltellusnow.We'llfindoutsoonerorlater.Hisappearancehaschangedsomuchthatyoumaywellnotrecognizehim.3.“情態(tài)動詞+havedone”結(jié)構(gòu)1)could/might/should/oughtto/needhavedone意為“本來能/可能/應(yīng)該/需要做……，但實際上未做……”。如：

Hecouldhaveescaped,buthechosetostandandfight.Itwasaneasytestandheshouldhavepassed,buthedidn't.2)“情態(tài)動詞+havedone”還可用來表示推測過去可能發(fā)生的事情。如：

Didyousayanythingthatmighthaveupsether?真題再現(xiàn)I.選用括號內(nèi)合適的內(nèi)容填空。1.Ilovetheweekend,becauseI________(needn't,mustn't)getupearlyonSaturdaysandSundays.(北京2016)2.Itwasreallyannoying;I________(couldn't,shouldn't)getaccesstothedatabankyouhadrecommended.(天津2016)needn'tcouldn't3.—Can'tyoustayalittlelonger?—It'sgettinglate.Ireally_______(can,must)gonow.Mydaughterishomealone.(北京2015)4.Lifeisunpredictable;eventhepoorest________(shall,might)becometherichest.(江西2014)mustmight5.George________(mustn't,can't)havegonetoofar.Hiscoffeeisstillwarm.(浙江2016)6.I________(needn't,couldn't)haveworriedbeforeIcametothenewschool,formyclassmateshereareveryfriendlytome.(天津2015)needn'tcan't鞏固練習(xí)I.選用方框內(nèi)合適的情態(tài)動詞填空(每詞限用一次)。canshallmayshouldneed1.—IsDavidcomingbytrain?—Heshould,buthe________not.Helikesdrivinghiscar.2.Noreader________removeabookfromthelibrarywithoutthepermissionofthelibrarian.shallmay3.Thegirl________notbeMary—she'sinNewYork.4.Thatthewell-dressedyoungman________speaktoyoulikethatisquiteastonishing.5.Haven'tyouseenthesign“Noparking”here?Cars________notbeparkedhere.mustcanshouldcanshallmayshouldneedII.選用括號內(nèi)合適的內(nèi)容補(bǔ)全下面短文。

Wemakedecisionsallthetime,butwe1.________(can,must)neverbecertainwhetherwearerightorwrong.Theworkyouchoosetodo2.________(may,should)besuitableforyouornot.Thepersonyoumarry3.________(shall,might)beaperfectmatchortheworstpossiblechoice.Supposeyouhavesavedmoneyforthemightcanmayfuture.You4.________(could,must)investitwiselysothatitgrowsinvalueoryou5.________(could,must)losealotinafoolishmoment.Youthinkyouhaveahealthydiet,butthefoodyoueat6.________(should,may)actuallybeverybadforyouand7.________(should,might)bethecauseofaterribleillness.Perhapsyoutravelalotbyplane.Alltheflightsyoumakeareroutine,couldcouldmaymightbutoneofthem8.___