情態(tài)動(dòng)詞專題復(fù)習(xí)

初中常用情態(tài)動(dòng)詞原形過去式詞義cancould能;會(huì)；可能maymight可以；可能must必須；一定Should應(yīng)該need需要考點(diǎn)一：情態(tài)動(dòng)詞在一般疑問句中的回答1、—Canyousing?

—Yes,Ican./No,Ican’t.2、—MayIsmokehere?—Yes,youmay./No,youcan’t/mustn’t

“禁止,不準(zhǔn)”。3、—MustIhandinmyhomeworktoday?

—

Yes,youmust./No,youneedn’t/don’thaveto.4、—NeedIfinishitnow?—Yes,youmust./No,youneedn’t●以must引導(dǎo)的一般疑問句其否定回答不能用mustn’t而要用needn’t或don’thaveto.●以may引導(dǎo)的一般疑問句其否定回答用mustn’t或can’t.●以need引導(dǎo)的一般疑問句其肯定回答用must考點(diǎn)二：情態(tài)動(dòng)詞表推測肯定推測must“一定是，肯定是”（把握大）may“也許，可能”（把握不大）否定推測can’t“不可能是”Eg:—Thegirlinred______beJenny.Sheoftenwearsaredskirttoschool.―No,it______beJenny.Imetherinthelibraryjustnow

must

can’t1.—Whoistheboyoverthere?IsitJohn?—No,it________behim.Johnismuchtaller.mustn’tB.maynotC.can’tD.needn’t2.John________cometoseeustonight,butheisn’tverysureyet.mayB.canC.hastoD.must3.AlicehasbeeninChinaforseveralyears.She____beabiggirl.A.mayB.canC.hastoD.must1.must&haveto區(qū)別haveto主要表示客觀需要,意為“不得不”。有人稱和時(shí)態(tài)的變化(hasto;hadto;willhaveto)must強(qiáng)調(diào)說話人的主觀看法,

意為“必須;應(yīng)該”考點(diǎn)三：易混情態(tài)動(dòng)詞辨析Herbikeisbroken.Soshehastotakethebustowork.2.can&beableto區(qū)別表示某種能力時(shí),二者可通用can只用于現(xiàn)在時(shí)和過去時(shí)(could),beableto可用于各種時(shí)態(tài)3.maybe&maybemaybe用于句首表示“可能;也許”,相當(dāng)于perhapsmaybe用于句中MaybetheboyisfromCanada.=TheboymaybefromCanada.那個(gè)男孩可能來自加拿大。其它考點(diǎn)：1.hadbetterdosth./hadbetternotdosth.2.Need做情態(tài)動(dòng)詞用于否定句，疑問句。

做實(shí)義動(dòng)詞后接動(dòng)詞不定式Eg:Youneedn’tworryaboutyourson.Heneedstoseeadoctor.3.含情態(tài)動(dòng)詞的被動(dòng)語態(tài)：情態(tài)動(dòng)詞+be+動(dòng)詞過去分詞Eg:Manystarscan’tbeseenbecausetheyarefar

awayfromus┃專項(xiàng)訓(xùn)練┃()1.—IsthatgirlinredSally?—No,it________her.ShehasgonetoHongKong.A.maybe

B.mustbeC.can'tbe()2.—Ican'tstopplayingcomputergames.—Foryoureyes,myboy,I'mafraidyou________.A.can

B.may

C.haveto

CC()3.________Sheknowtheanswer,butI’mnotsure.A.MaybeB.maybeC.mayD.must()4..—IsthatgirlSusan?—It

beher.SheleftforBeijingyesterday.A.needn’t

B.can’t

C.mustn’t

AB()5.—MustIdomyhomeworknow,mom?—________.Youcandoittomorrow.A.No,youneedn'tB.No,youmustn't C.Yes,youneedD.Yes,youmust()6.—________TomspeakJapanese?—Yes,hehaslearntitinTokyoforthreeyears.A.ShouldB.MustC.CanD.MayAC()7.—CanIwalkacrosstheroadnow,mom?—No,you________.Youhavetowaituntilthelightturnsgreen.A.couldn'tB.shouldn'tC.mustn'tD.need't()8.—________Ifinishthehomeworkthisafternoon?—No,youneedn't.It________beforeFriday.A.Can;canfinishB.Must;mustfinishC.Must;canbefinishedD.Can;mustbefinishedCC

()9.—________Iaskyouaquestion?—Sure.A.MayB.WouldC.Do()10.Lucy________readstorybookattheageoffour.A.isabletoB.wasabletoC.shouldD.wouldAB

()11Theflowers_________everyday,ortheywilldieA.mustwaterB.mustbewateredC.canbewaterD.shouldwater()12.—Lucy,howareyoufeelingnow?—Iammuchbetter,Mum.Soyou

takemetoseethedoctor.A.can’t B.mustn’t C.needn’t D.couldn’tBC()13.Youshould______bookwhenyouwalk.Itbadforyoureyes.A.notreadB.nottoreadC.don’t()14.Youlooktirednow.You_____stayathomeandhavearest.