人教版英语必修三Unit2 Grammar.ppt

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1、ModalVerbIIUnit2balanceyourdietfeelfrustrated/discouraged/upsetbetiredofsthloseweightnothavesb.gettingawaywithdoingsth.findsth.limitedearnone’slivingconsultadoctorcutdownone’sexpensesNothingcouldbebetter!Curiositydrovesb.inside.drivesb.mad/crazyvaluesb.valuablevalueless=worthlessinvaluablead

2、vicevalueone’sadvice/friendshipvaluesb.asafriendTheweaknessofthisdietisthatithastomuchfatandsugar;itsstrengthisthatithasplentyofenergy-givingfood.Theshopkeeperistryingtowinhiscustomersbackwithadiscount.Ifyoudon’tsaysorryforyourmistake,theywon’tletyougetawaywithit.Hehasbeenindebtforalongtime.

3、Howtoearnhislivingisabigproblem.WhenIwaswaitingformyfriend,Isuddenlyspiedamannotfarawayglaringatme.Idon’twanttolietoyou,butIhavetosaythathisintelligenceislimited.Expertssayeatingcarrotsbenefitsyoureyes.Iusuallyeatdumplingswithalittlevinegar,whichIbelievehelpsmedigestthefood.Bylunchtimetheywo

4、uldallbesold.Bynowhisrestaurantoughttobefullofpeople.Whatcouldhavehappened?Nothingcouldbebetter.EventhoughthercustomersmightgetthinaftereatingYonghui’food…Theywouldbecometiredveryquickly.possibilitySomethingterriblemusthavehappenedif…GuessingI’llhelpyouloseweight…Hecouldn’thaveYongHuigetting

5、awaywithtellingpeoplelies.IntentionHecouldn’tbelievehiseyes.Hecouldwinhiscustomersback.AbilityPerhapsheshouldgotothelibraryandfindout.Hehadbetterdosomeresearch.DutyIthinkshe_______apologisetothepublic.You________goandseethedoctor.我认为她应该向公众道歉。你应当去找医生看看病。oughttooughttoFillintheblanksaccordingt

6、otheChinese.Titanic______beagoodmovie.Weknowifwekeepatitwe_______succeed.泰坦尼克号应该是部好电影。我们知道如果我们坚持下去就应该会成功。shouldshouldWe______putonwarmclothesinwinter.冬天的时候，我们不得不穿上温暖的衣服。你必须把面粉和黄油和在一起。You_______mixtheflourandthebutter.havetohavetoInEnglandtraffic_____keeptotheleft.在英国，车辆必须靠左行驶。Allpassengers__

7、____wearseatbelts.所有乘客都必须系安全带。mustmust上面的空你都填对了吗？如此多的情态动词，我们应当如何使用呢？接下来就进行详细的讲解。should和oughtto都为“应该”的意思，可用于各种人称。oughtto的语气稍重一些。Yououghtto(should)followyourteacher’sadvice.oughtto／should表示主语的义务或责任：Youshouldtakecareofyoursister.你应当去照顾你妹妹。或指出一个正确、明智的动