高一英语下册 unit14 festivals(第五课时)教案 大纲人教版第一册

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1、TheFifthPeriodModalVerbs(Ⅰ)TeachingAims:1.Reviewtheusagesofmodalverbswhichexpress“obligation”.2.Sumupsomeothermainusagesofthesemodalverbs.TeachingImportantPoints:1.Howtocorrectlyusemodalverbswhichexpress“obligation”.2.Howdotellthedifferencesbetween“must”and“haveto”andbetween

2、“mustn't”and“don'thaveto”.3.Howtounderstandthemeaningofthestructure“should/oughtto+have+p.p.”.4.Howtocorrectlyusethenegativeformsof“hadbetter”,“oughtto”and“haveto”.TeachingdifficultPoints:Howtocorrectlychoosemodalverbsindifferentsituations.TeachingMethods:1.Reviewmethodandin

3、ductivemethodtoenablethestudentstomakeclearwhatthey'velearned.2.Practicetomakethestudentsmasterwhatthey'velearnedcorrectly.TeachingAids:aprojectorandsomeslides;amultimediaTeachingProcedures:StepⅠ.GreetingsGreetthewholeclassasusual.StepⅡ.Lead-inT:Inthesetwounits,welearnedtous

4、esomemodalverbstoexpress“obligationandduty”andtogiveadviceaboutsomething.Pleasetellmewhattheyare?Ss:Theyaremust,have(got)to,hadbetter,shouldandoughtto.(TeacherwritesthemontheBb.)T:Yes.Nowlet'sdoanexercise.(Teachershowsthescreen.)1.Whentravelling,you__________takecareofyourhe

5、alth.2.Insomepartsoftheworld,you__________boilthewaterbeforedrinkingit.3.Ifyouhaveastomachpain,you__________drinkhotweaktea.4.You__________takethismedicine,butyourheadmayhurtlessifyoudoso.5.You__________swimimmediatlyafteraheavymeal.6.You__________notwakemeupwhenyoucomein.No

6、wlookatthesentencesonthescreenandfillineachblankwiththemodalverbsontheblackboard.Let'sfinishthemtogetherorally.Suggestedanswers:1.should/must　2.must/haveto　3.should/oughtto　4.don'thaveto　5.shouldnot/oughtnotto/mustnot　6.hadbetterStepⅢ.RevisionoftheUsagesoftheModalVerbsT:Well

7、done.Asweallknow,“must,shouldandoughtto”allexpressobligationandduty.When“must”expressesobligationandduty,itismuchmoreforcefulthan“should”and“oughtto”.Itexpressesveryemphaticadvice.Forexample:Theworkmustbefinishedbeforedark.“Must”isonlyusedinaffirmativesentenceandaninterrogat

8、ivesentencetoexpressobligationandduty.Thenwhatshouldweuseinanegativesentenc