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1、Unit2GrammarandUsageModalverbsUnit2GrammarandUsageModalverbsCanyousingtheEnglishsong?What’sthedefinitionofmodalverbs?情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语,只能和其他动词原形构成谓语。Whatarethefunctionsofmodalverbs?一.Weusemodalverbstotalkabout:1.Ability(能力)2.Oblig
2、ation(义务)3.Certainty(可能性)4.Permission(允许)二.Wealsousemodalverbsto:5.Makerequests(提出请求)6.Makesuggestions(提出建议)7.Makeoffers(提供帮助)8.Giveadvice(提出意见)Howcanwedealwithexercisesconcerningmodalverbs?Functions&usageofmodalverbsLanguagecontext(上下文、语境)ThinkingFunctio
3、ns&usageofmodalverbsLanguagecontext(上下文、语境)Someofuscanusethecomputernow,butwecouldn’tlastyear.Itwillbesunnyinthedaytime,butitcouldrainlateronthisevening.-----CanIgonow?-----Yes,youcan.Couldyouwaitafewdaysforthemoney?Thiscan’t/couldn’tbedonebyhim.表示“能力”表示“
4、客观可能性”表示“请求和允许”表示“请求”,口语中代替can,使语气更委婉,主要用于疑问句,答语用can.----CouldIuseyourbiketomorrow?Yes,________.No,_______________.表示不相信的态度(主要用于否定句,疑问句和感叹句中)”youcanI’mafraidnot1.can和couldAttention:1.can/beableto区别:can表示与生俱来的能力或一种客观可能,而beableto更加强调通过后天的学习和努力获得的能力,或者在某个客观的
5、场合和背景下,能做到的事情。表示特定的某一过去能力或表示成功地做了某事时,只能用was/were able to, 不能用could。He_________flee Europe before the war broke out.Note:wasabletoAbigfirebrokeoutinABChotelyesterday.Luckily,everyone__________runoutofthebuilding.wasableto2.She_____speakbothEnglishandFrench
6、.canIcan’tthankyoutoomuch.cannever/can’t……too表示“无论怎样…也不过分”,“越…越好”。你过马路的时候再小心也不为过。Youcan’tbetoocarefulwhilecrossingtheroad.MayIwatchTVaftersupper?Yes,__________________./No,_______________________.MightIuseyourtelephone?MayIgohomenow?Itmaybetrue.Shemaycome
7、tomorrow.Hemighthavesomefever.Mayyousucceed!Mayyouhavemanymoredaysashappyasthisone!youmayYoumustn’t允许,许可禁止,阻止Might比May的语气更委婉表示可能性的推测,译为“大概,可能”用might时显得更加不肯定用于祈使句表示祝愿2.May和MightAcomputer_______thinkforitself;itmustbetoldwhattodo.A.can’tB.couldn’tC.maynotD.
8、mightnotAmay______________can____________表主观“可能”表客观“可能”cannot___________maynot__________不可能可能不may和can—They___bedoingtheexperimentinthelab.—Why?—Becausethelightsarestillburning.A.couldB.canC.mustD.wouldPairwork3.must