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1、情态动词精品学案情态动词解读:①本身有一定的词义,表示说话人的情绪、态度或语气的动词。②不能单独作谓语。③和其他动词原形构成谓语。④谓语动词之前。⑤无人称和数的变化。⑥否定式构成是在情态动词后面加“not”。⑦个别情态动词有现在式和过去式两种形式,过去式可以用来表达更加客气、委婉的语气,时态性不强,可用于过去,现在或将来。经典例句:Wecanbethereontimetomorrow.我们明天能按时去那儿。MayIhaveyourname?我能知道你的名字吗?Shallwebeginnow?我们现在就开始吗?Howdareyoutre
2、atuslikethat!你怎么敢那样对待我们!Wecan'tcarrytheheavybox.我们搬不动那箱子。情态动词考点:1.情态动词表示推测。2.情态动词的基本用法。3.情态动词的答语。17常见情态动词:情态动词有can(could),may(might),must,haveto,shall(should,will(would),dare(dared),need(needed),oughtto等。情态动词的基本用法:一、can,could1)表示能力(体力、知识、技能)时,等于beableto。a)Canyouliftthis
3、heavybox?(体力)b)Areyouabletoliftthisheavybox?c)Marycanspeakthreelanguages.(知识)d)IsMaryabletospeakthreelanguages?e)Canyouskate?(技能)此时可用beableto代替。2)can表示请求和允许。-----CanIgonow?-----Yes,youcan./No,youcan’t.此时可与may互换。在疑问句中还可用could,might代替,不是过去式,只是语气更委婉,不能用于肯定句和答语中。(特别注明:这是在表示
4、请求和允许的时候。)----CouldIcometoseeyoutomorrow?----Yes,youcan.(No,I’mafraidnot.)can't在否定句中可以表示命令,不允许,但是语气比mustn't弱,具有劝慰的意思.3)can表示“有时会”:Akindpersoncanlosetempersometimes.4)表示与五种感官和知觉的动词连用。Icanhear/seeyouclearlyfromhere.Youcanimaginehowannoyedshewas!175)can与beableto的区别①Can只有一般
5、现在时(can)和一般过去式(could);而beableto则有更多的时态。I’llnotbeabletocomethisafternoon.②当表示“经过努力才得以做成功某事(此事一般是一次性的,具体指的是某件事经过努力做成了)”时应用beableto,不能用Can。经典例句:Hewasabletogotothepartyyesterdayeveninginspiteoftheheavyrain.Hewasabletosurvivethefirebecausehewasbrave.经典练习1.(2010全国卷I29).Justbe
6、patient.You_____________excepttheworldtochangesosoon.A.can’tB.needn’tC.maynotD.willnot3.(2009北京卷)Oneofthefewthingsyou___sayaboutEnglishpeoplewithcertaintyisthattheytalkalotabouttheweather.A.needB.mustC.shouldD.can4.The fire spread through the hotel very quickly but ever
7、yone __________ get out. A. had to B. would C. could D. was able to 5.【2012全国卷II】⒘I’mgoingtoEuropeonvacationtogetherwithJohnifI___findthemoney.A.canB.mightC.wouldD.need(2011四川卷)20.Thepolicestillhaven’tfoundthelostchild,butthey’redoingallthey______..A.canB.mayC.mustD.sho
8、uld6、(2006湖南卷)32.Someaspectsofapilot’sjob________beboring,andpilotsoften_______workatinconvenienthours.A.can;h