谈谈情态动词谈谈情态动词--------------------ModalVerbsModalVerbs我们常见的英文动词有:及物动词我们常见的英文动词有:及物动词------------TransitiveTransitiveVerbsVerbs不及物动词不及物动词----------intransitiveVerbs,intransitiveVerbs,助动词助动词--------AuxiliaryVerbsAuxiliaryVerbs联系动词联系动词----------LinkVerbsLinkVerbs和情态动词和情态动词--------ModalModalVerbsVerbs还有其他的;非谓语动词:如动词不定式,动名词还有其他的;非谓语动词:如动词不定式,动名词情态动词和其他动词连用,可表示说话人的语气或态度。情态动词和其他动词连用,可表示说话人的语气或态度。情态动词可表达建议,要求,可能和意愿等。情态动词可表达建议,要求,可能和意愿等。情态动词没有人称和数的变化。情态动词没有人称和数的变化。Possibility:Possibility:Ability:Ability:Requests:Requests:Necessity:Necessity:Certainty:Certainty:Permission:Permission:Suggestions:Suggestions:Advice:Advice:can/could,may/mightcan/could,may/mightcan/could,beabletocan/could,beabletocan/could,will/would,can/could,will/would,wouldlikewouldlikemust,haveto,havegotto,must,haveto,havegotto,needneedmust,will,shouldmust,will,shouldcan/could,may/mightcan/could,may/mightcould,may/might,shallcould,may/might,shallshould,oughtto,hadbettershould,oughtto,hadbetter一.can和could用于表示“可能”或“推测”,表示说话人能,可以,准许以及客观条件许可,could为can的过去式1.11.1表能力,有“能”、“会”、“能够”的意思表能力,有“能”、“会”、“能够”的意思例如:例如:Canyoudriveacar?Canyoudriveacar?----------Yes,Ican.Yes,Ican.----------No,Ican't.No,Ican't.。。1.21.2表允许,在口语中代替表允许,在口语中代替maymay,,有“可以”的意思有“可以”的意思例如:例如:CanIuseyourbike?CanIuseyourbike?过去式过去式couldcould表示的语气更加委婉、客气表示的语气更加委婉、客气例如:例如:CouldIcometoseeyoutomorrow?CouldIcometoseeyoutomorrow?1.31.3表示可能性,常用于否定句和疑问句表示可能性,常用于否定句和疑问句例如:例如:Canitbetrue?Canitbetrue?TodayisSunday.Hecan'tbeatschool.TodayisSunday.Hecan'tbeatschool.was/wereableto””“””意含经过努力凭借才能获得的””能力常与manageto”相通e.g.,Hestartedearly,andhewasabletoarrivedtheearliest.Theyworkedhard,sotheywereabletodomoreforthecompany.Theywereshortofmodernmachines,buttheywereabletocompletetheprojectintime.二.may和might用于表示“事实上的可能性”或“预测”1.1.Itmayraintomorrow.Itmayraintomorrow.2.2.Itmaysnowlaterthisafternoon.Itmaysnowlaterthisafternoon.3.3.Youmightberight.Youmightberight.三.must用于表示“必定”“必须”1.1.mustmust表示必须,否定回答时用表示必须,否定回答时用neednneedn’’t.t.mustnmustn’’tt表示不许可表示不许可e.g.1)MustIcometonight?e.g.1)MustIcometonight?------No,youneedn’t.------No,youneedn’t.2)Youmustn't’tsmokeinthehospital.2)Youmustn't’tsmokeinthehospital.2.2.mustmust用于肯定句,可以表示推测,翻译为:一定或想用于肯定句,可以表示推测,翻译为:一定或想必。必。Mustdo/mustbedoingMustdo/mustbedoing,,表示对现在的推测;表示对现在的推测;mustmusthavedonehavedone表示对过去的推测。对过去的推测是考试的重点表示对过去的推测。对过去的推测是考试的重点1)Shemustlivenearhere,forshecomestoworkonfoot.2)Shewasabsentfromclass.Theremusthavebeensomethingwrongwithher.3)Thelightwasout.Theymusthavegonetobed.3must表示说话人的主观看法;haveto(havegotto)表示客观需要Youmustbetiredafterthelongjourney.Itistoolate;Ihavetoleavenow.四need/dare1)做情态动词,通常用在否定句或疑问句中Heneed’tpayforit.HowdareyousayIamunfair.2)作实义动词,有时态...