被动语态基本结构 be+v过去分词1.一般现在时被动语态 am / is / are+v过去分词2.一般过去时被动语态 was / were+v过去分词3.现在进行时被动语态 am /is /are+being+v过去分词4.过去进行时被动语态 was / were+being+...