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时间:2020-05-20
《Module 12 语法 情态动词表推测.ppt》由会员上传分享,免费在线阅读,更多相关内容在PPT专区-天天文库。
1、情态动词情态动词表示猜测在情态动词家族中,有些成员可以表示“猜测”,看下面的例句,注意黑体加下划线的词,然后用can,may,might,must,can’t,maynot或mightnot补全“结论”中所缺内容。1.—WhereisTom?—I’mnotsure.ButIthinkhemaybeathome.2.ThemanagertoldmeImighthaveadayoff.3.Shemightnotcometomorrow.4.Canthisbesure?5.Thelightison.He
2、mustbeathome.6.Thedoorislocked.Hecan’tbeathome.由以上例句可以看出:1.表示肯定推测的情态动词有:____(一定;准是),_________(也许;可能;或许)。2.表示否定推测的情态动词有:_____________(不可能),___________,(也许不;或许不)。3.______________表示推测时一般不用于肯定句,_____________,_____________和________________表示推测时一般不用于疑问句。4._
3、_____________与_____________两者表可能性都较小,此时无时态之分,但当主句谓语动词为过去式时,则要用__________。1.Thewatchisn’tyours.Whose______________itbe?2.You’dbettergoandaskMissLiu.She_________________knowhowtosearchtheInternet.3.Jim_____________beathomebecausehephonedmefromtheparkjus
4、tnow.4.MissLisaidshe________________comelate.5.—IsawLilyonmywayherejustnow.—It____________beher.Shehasjustbeenabroadfortwodays.1.can可以表示对现在或将来的推测,意为“会,可能”。通常用于肯定句和疑问句。用于否定句时,can’t表示“不可能”;用于否定句时,can比could表示的“可能性”更大。例如:1.Whosentthepresent?Canitbeyourbro
5、ther?2.Itcan’tbemybrother.HeisstillinFrance.情态动词表示推测Hecouldbeinpain.①Youmustcometoschoolontime.②Youmustn’tswimhere.Thewaterissodeep.③Theymustbegoodfriends!Theyoftengotoschooltogether.must意思是“必须”mustn’t表示禁止,不准…must表示猜测,意思是“一定,肯定”情态动词表推测Sheverytired,she
6、fellasleepwhileshewasdoinghomework.mustbeExercises1.—FiftydollarsforsuchaT-shirt!You____bejoking!—I’mserious.It’smadeofsilk.A.mustB.needC.mayD.canA2.情态动词can的用法(2)can表示能力,意思是“会,能够”,同义词是beableto①Hecandriveacarwhenhewas18.②Shecanbeathomeatthemoment③Thisc
7、an’tbetrue.这不可能是真的。(3)can表示猜测,意思是“可能”,cann’tbe不可能.中考链接1.—Isthatyourteacher?—That_____beMr.Wang.HehasgonetoJapanwithhiswife.A.can’tB.mustn’tC.maynotA3.—IsthatgirlunderthetreeMary?—No,that______beMary.SheisinNewYork.A.canB.mustn’tC.can’tC4.—IsMariaknock
8、ingatthedoor?—It____beher.SheisinAustralianow.A.maynotB.needn’tC.mustn’tD.can’tD5.—You_____behappywiththestrongpublicsupportyou’vereceived.—Yes,you’reright.I’mreallyexcited.A.mayB.canC.mustD.need6.Thatman_____bemyEnglishteacher.HehasgonetoCana
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