M4U2 情态动词(叶文斌)ppt课件.ppt

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1、Unit2GrammarandUsageModalverbsJack—Ihavegoodnewsforyou!Rose—What?Jack—Theeducationaldepartmenthascarriedoutrulestoreducestudents'toomuchstudyload.Rose—Really?Ifso,Idon’thavetostayuplatetodosomuchhomeworkandmymommayallowmetoplaycomputergames.Jack—ThebestthingIthinkisthatIcanhavemoresparetimet

2、otakeexerciseafterclass.Rose—Sure.Bytheway,whoisyourfavoritesportsstar?Jack—LiuXiang,Ishouldsay.Rose—Tellmesomethingabouthim.Jack—Well,maybeIcanshowyousomephotos.Weusemodalverbstotalkabout:Ability（能力）Obligation（义务）Certainty（可能性）Permission（允许）Wealsousemodalverbsto:Makerequests（提出请求）Makesugges

3、tions（提出建议）Makeoffers（提供帮助）Giveadvice（提出意见）1.Ability(能力):LiuXiangcanrunthe110mhurdleracewithin13seconds.can/could:1.can一般表示与生俱来的能力或者一种客观可能性,还可以表示请求和允许。LearningEnglish_____bedifficult.canMancannotlivewithoutair.can/could:2.在疑问句中，用could可表示请求，语气较委婉。—____youlendmesomemoney?—Sure.CouldHeasksifhe_

4、___smokehere.couldcan/could:3.表示惊异、怀疑、不相信的态度。（主要用在否定句、疑问句或惊叹句中）He’ssuchanicepersonthathe______committhecrime.can’t你怎么会如此地粗心！Howcanyoubesocareless!Canthisbetrue?can/could:4.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.Attention:can/beableto区别

5、:Edisonalwayswonderedwhyhenscouldhatch(孵)chickenswhilehewasnotableto.Question:Arethetwomodalverbsinterchangeable(互换)?Ifnot,why?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，或者在某个客观的场合和背景下，能做到的事情。Attention:can/beableto区别:AbigfirebrokeoutinABChotelyesterday.Luckily,everyone__________runouto

6、fthebuilding.wasableto2.Ifyoufeellikeit,you___goforawalkinthepark.canI’msotired!Ihavetodothetrainingforatleast10hoursaday!2.Obligation(义务):…yet,Hemustworkhardtowinthegoldmedal.AlthoughLiuXiangissogiftedinhurdlerace…Attention:advisabilitynecessityoughtto/shouldhavetomustYoumotherbringsyouupan

7、dtakesgoodcareofyou,sowhensheisold,you___lookafterherinreturn.A.canB.mayC.havetoD.mustShiDongpengmightwinamedalattheOlympicgames.Althoughthechanceofwinningamedalissmall,I’lltrymybest!3.Certainty(可能性):Attention:veryuncertainalmostcertainmightshouldm