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Unit4Don’teatinclass.Let'splayagame!Whoknowsthesesigns?Wecan’trulethecountrywithoutrules.没有规章制度就不能治理好国家。Review:特殊情况:Schoolrules:1.Don’tr____inthehallways.1c:PairworkA:Canwelistentomusicinclass?根据句意用can和can’t填空1.MrGreensmokeherebecausethere’sasignonthewall.Itsays“Nosmoking.”2.It’sveryhotoutside.Youwearahat.3.Weeatintheclassroombecauseit’simpolitetoteachers.4.Thestudentsreadbooksandmagazinesinthelibrary.Selectthecorrectverbfromthechoicesinparenthesis.选择正确的动词填空。1.(Can/Does)______weeatinclass?2.(Don't/Hasto)______wearahatinclass!3.DoesBill(haveto/can)______gotobednow?4.FranciscoandAndrew(can't/don't)______come?5.(Do/Haveto)______theywearsportsshoes?SectionBSummary:theJonesfamily用haveto或hasto填空1.Wecleanourclassroomafterschool.2.Shemakeherbedaftergettingup.3.It’slate.MrBeckmangotoworkbycar.4.EmilyandPeterjoinamusicclub.Theypracticeguitareveryday.havetomust与haveto(2)must的否定形式为_________haveto的否定形式为_____________两者意义也不同。前者表示“不应该”、“不许可”、“禁止”等后者表示“不必要”。如:你们不能在马路上踢足球。You_______playfootballontheroad.你今天不必练钢琴了。You____________________practicethepianotoday.练一练:1.Hehastostayathome.否定:He__________________stayathome.一般疑问:_______he___________stayathome?Yeshe______./Nohe_______.划线提问:___________he_____________?2.She___comeearlynexttime.A.don'thavetoB.hasn’ttoC.doesn'thastoD.doesn’thaveto3.Doesshehavetogetupsoearlytomorrowmorning?Yesshe________.A.isB.haveC.hasD.does4.IlikethepartysomuchbutI___gohome.It’stoolate.A.mustB.havetoC.mayD.can5.DoesLinda___togotoschoolonweekends?Noshe___.havedon'tB.hasdoesn'tC.havedo