Unit7 情态动词的被动语态 By Zhang ShaojianTeaching goals:1.Ss can master the structure of Passive Voice with modal Words.2.Ss can know about the usage of Passive Voice with modal words3.Ss can use the knowledge to do some exercisesImportant point: 1.the structure of Passive Voice with modal words 主+must/can/may/might/should+be+动词的过去分词 2.how to change the active voice into passive voiceDifficult point:1.different forms of Passive Voic
