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can’t. No, I mustn’t. you…? 4. Need you…?Yes, I must. Yes, I must.No, I needn’t. No, I needn’t.No, I don’t have to No, I don’t have to. .?could, might, would等過去式用在疑問句表語氣委婉時,其回答要用原形。 ?Could you tell me what’s the matter with you??Yes, I can. ?Sure./ Certainly/ Of course.Finding the Rule1)Givingadvice2)Sayingthatsomethingisnecessary3)Politelyaskingsomeonetodosomething4)Askingsomeoneforpermissiontodosomething5)Sayingthatperhapssomethingwillhappen____________________476216)Sayingthatsth.willalmostcertainlyhappen,aslongasnothingunexpectedstopsit7)Expressinganopinionaboutsomethingthatthespeakerisnotsureabout.8)Expressingobligation(義務(wù) )andduties.9)Expressingneed.3589________________1) A:Dowehavetofinishthisjobtoday?B:Yes,you___________.2)Ifitisraining,you_____________takeanumbrellawithyou.3)Excuseme,but_____Iaskyouaverypersonalquestion?4)Ican’tbesure,butI_____belatethisevening.Sodon’twaitforme.Applying the RuleCompletethefollowingsentenceswithmay,should, must, willorhave to.mustshould/ mustmaymay5)A:Youdon’t________returnthebooknow.YoucankeepituntilnextMondayifyoulike.B:Thankyouverymuch.6)Thetrain________behereanyminutenowbutyouneverknow.7)Excuseme,but_____youpleasestayoffthegrass.8) He_______st