Modal Verbs 情态动词讲稿ppt课件.ppt

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1、GrammarModalVerbs情态动词基本用法*can/could:表示现在或过去的能力*beableto:能用于各种时态1、表示“能力”的情态动词的用法can,could,beableto1).He___________gotothepartyyesterdayeveninginspiteoftheheavyrain.2).Althoughhe_____swim,he__________crosstheriver.wasabletocouldn’twasableto但是“在表示过去某种特定的情况下，设法成功做到了…….时”，只能用：was/wereabletodost

2、h.相当于managedtodosth.或者succeededindoing…Whentheboatturnedoverintheriver,Jack_______swimtothebank.A.couldB.wasabletoC.canD.should特别提示：3).Can可以表示客观可能性:“完全会…”Anybodycanmakemistakes.Itcansnowinthesouth.may/might,can/could2、表示“许可”的情态动词1).---____Igoouttoplay,mum?---No,you___.Youshoulddoyourhomewo

3、rkfirst.A.Might;wouldn’tB.Can;needn’tC.Can;can’tD.Need;mustn’t2).---CouldIcallyoubyyourfirstname?---Yes,you____.A.willB.couldC.canD.mightCan/CouldIsmokehere?Yes,________.could比can更委婉，无时间上的差别，常用于疑问句，不用于肯定句回答用can.youcanmay/might:表示许可意为可以、用于同意别人的请求或建议或征求别人许可。Youmayleavenow.----MayIsmokehere？

4、----Yes,youmay.----No,youmustn't.might:may的过去式；语气委婉，不用于问句中。固定搭配：mayaswelldo…：Youmayaswellstayhereoverthenight.还是…..干的好3、表示“请求”的情态动词的用法could/will/would：第二人称问句Will/wouldyoucometomypartytomorrowevening?Yes,Iwill.shall：第一、三人称问句Shallwegatherattheschoolgateafterschool?Shallshewaitoutsidetheroom?

5、Excuseme,______youtellmethewaytotherailwaystation,please?couldYouarecarryingalotofthings.Youcan’topenthedooryourself.There’samanstandingnearthedoor.Yousaytohim:______youopenthedoor,please?Could______youlikeacupofcoffee?Would特别注意1：will可以表示一种倾向，与努力相对“总是…；老是…”Mypen________worknomatterhowhardI

6、try.won’t特别注意2.表示过去的一种倾向时，用would.Thedoorwouldn’topen.特别注意3：would可以表示一种习惯，过去常常干…“总是…；老是…”WheneverIwenttoseeher,hermother____letmeout.区别：usedto后多接静态动词would多接行为动词We______begoodfriends.wouldusedto特别注意4：shall:用于陈述句中，给对方的命令、警告、决心、允诺或威胁等1.“Noperson____smokeorcarryalightedcigarette，cigarorpipeinth

7、isarea.A.willB.mayC.mightD.shall2.“Theinterest______bedividedintofiveparts,accordingtotheagreementmadebybothsides.”declaredthejudge.A.mayB.shouldC.mustD.shall3.Thenewconstitutionstipulatesthatwoman____haveequalrightwithmeninvotingandbeingelected.A.willB.shallC