高一英语情态动词课件.ppt

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1、GrammarModalverbsⅡ情态动词Unit2.book3ByJerryRevisionTellthefunctionsofthemodalverbs.Youmustgo.Youhavetogo.Youmustn’tgo.Youdon’thavetogo.Youcanusemyphoneifyouwant.Pariscanbeveryhotinsummer.(aninternalneedorobligation)(anexternalneedorobligation)(prohibition禁止)(anabsenceofobligationorneed).(permission)(p

2、ossibility)Thechickenmustbecookedthoroughly.Youhavetobookinadvance.Visitorsmustremoveallfootwearbeforeentering.Iwillseeyoutomorrow.Thatmay/mightbeabetterthingtodo.Calculatorsmaynotbeusedintheexamination.(Necessity)(Necessity)(statingformalrulesandregulations)(willingnessorprediction)(Possibility)(P

3、ermission)MayIbeexcused?Thechildrenshouldn’t/oughtn’ttodroplitteronthefloor.Heshould/oughttocycletowork,theexercisewouldbegoodforhim.Thelettershould/oughttoarrivebyFriday.(requestsforpermission)(Obligation)(Suggestion,sayingwhatisthebestoragoodthingtodo)(Probability,indicatingthatsomeoneexpectssome

4、thingtobetrueortohappen)ModalVerbDrillPOSSIBLEIMPOSSIBLECERTAINWegoout.(CERTAIN)We’llgoout.Westayathome.(IMPOSSIBLE)Wecan’tstayathome.Wegotothecinema.(POSSIBLE)Wemightgotothecinema.1.Ihaveadrink.(CERTAIN)2.Ihavecoffee.(IMPOSSIBLE)3.Ihavetea.(POSSIBLE)4.Weworktonight.(POSSIBLE)5.Youworktonight.(IMPO

5、SSIBLE)6.Iworktonight.(CERTAIN)7.Igohome.(necessity)8.Welookaftertheold.(duty/obligation)9.Wedotheworkrightnow.(suggestion)10.Wearelate.(prohibition)Reformulate(改写)thefollowingsentencesusingmodalverbsItisnecessarythatyouwearshoes.Itisnotnecessarythatyouwearshoes.Itisnecessarythatyoudonotwearshoes.Y

6、oumust/havetowearshoes.Youdon’thavetowearshoes.Youmustn’twearshoes.Itispossiblethathewenttothedentist.Hemayhavegonetothedentist.MatchtheAnswerstotheQuestionsandstudythemodalverbs.Modalverbs+have+pastparticipleMay/might+have+pastparticiplecanbeusedtotalkaboutapossibleeventinthepast,e.g.1.Doyouthink

7、Amymighthavearrivedbynow?sometimesbeusedtotalkaboutapossibleeventoccurringbeforeatimeinthefuture,e.g.2.Itmighthavebeensoldbythetimewegetthere.Must+have+pastparticipleisusedtodrawaconclusion(得出结论,推论)aboutsom