精选优质文档-倾情为你奉上Module 4 CarnivalGrammarRevision of the passive voice and by+ing formGoals To review the passive voice and by+ing formProceduresStep 1: Revising the passive voice formationTense Subject Auxiliary Past Participle Singular Plural Present The car/cars is are designed. Present perfect The car/cars has been have been designed. Past The car/cars was were designed. Past perfect The car/cars had been had been desig