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1、2.Howmanyyearscanamountainexist Beforeit'swashedtothesea?Yes,howmanyyearscansomepeopleexist Beforethey'reallowedtobefree? Yes,howmanytimescanamanturnhishead, Pretendinghejustdoesn'tsee? Theanswer,myfriend,isblowinginthewind, Theanswerisblowinginthewind.BlowingintheWind3.Howmanytimesmustamanl
2、ookupBeforehecanseethesky? Yes,howmanyearsmustonemanhave Beforehecanhearpeoplecry? Yes,howmanydeathswillittaketillheknows Thattoomanypeoplehavedied? Theanswer,myfriend,isblowinginthewind, Theanswerisblowinginthewind.1Howmanyroadsmustamanwalkdown Beforeyoucallhimaman? howmanyseasmusta
3、whitedovesail Beforeshesleepsinthesand? Yes,howmanytimesmustthecannonballsfly Beforethey'reforeverbanned? Theanswer,myfriend,isblowinginthewind, Theanswerisblowinginthewind.GrammarModalverbsSelf-studycancouldmaymightshallshouldmustwillwouldoughttohavetodare(daren’t)need(n
4、eedn’t)usedtomodalverbs1.Howmanymodalverbsdoyouknow?只作情态动词的可情态可实义的可情态可助动词的相当于情态动词的can/could,may/might,oughtto，mustneed,dare/daredshall/should,will/wouldhaveto,usedto2.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。3.Whatarethefunctionsofmodalverbs?1.
5、Totalkabout___________________2.Totalkabout____________________3.Totalkabout___________________4.Totalkabout____________________abilityobligationcertaintypermission5.Tomake_____________________6.Tomake____________________7.Tomake_____________________8.Togive_____________________requestssugge
6、stionsoffersadvice2.ReadPartAonpage31,andthencompletethepassage.Answers(1)can(2)dare(3)can/could(4)may/might/could(5)mustn’t/shouldn’t/can’t(6)mustn’t/shouldn’t/can’t(7)can(8)needn’tgroup-study1.Talkaboutability:can,could和beableto的用法Shecan/beabletosingthesonginEnglish.Thismachinecanmakeyoufe
7、elcomfortable.1.can,beableto都可表示“能力”Can的主语是人或物,beableto的主语是人We’llbeabletofinishtheworksoon.Ihaven’tbeenabletoseethefilm.2.can只用于现在时和过去时(could)。be able to可以用于各种时态。3.could用于表示泛指过去的能力。如：I could read when I was four.4.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
