6、还可表示“偏偏、偏要”e.g.Mustyoumakesomuchnoise?1.不必须mustn’t禁止11策划:《学生双语报》You___buyagift,butyoucanifyouwantto.mustB.mustn’tC.havetoD.don’thaveto2.WhenIwasyoung,IwastoldthatI______playwithfire.A.wouldn'tB.needn'tC.mustn'tD.daren't3.-MayIsmokehere?-Ifyou__,chooseaseatinthesmokingarea.A.should B.could C.