Essential Grammar in Use(Third Edition)--Modals, imperative etc. Unit31
mustmustn'tdon'tneedtoAmust+infinitive(mustdo/mustworketc.):I/we/you/theyhe/she/itmustdogoseeeatetc.BImust(dosomething)=Ineedtodoit:I'mveryhungry.Imusteatsomething.It'safantasticfilm.Youmustseeit.Thew