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A.熟记结构 被动语态的结构为助动词be+及物动词的过去分词(p.p)。被动语态的不同时态是通过be的时态变化来表示的，其人称和数方面应与主语保持一致。其具体变化为： 一般现在时：am/is/are+p.p. 一般过去时：was/were+p.p. 一般将来时：shall /will be +p.p. 现在完成时：have /has been +p.p. 现在进行时：am/is/are+being+p.p. 过去将来时：should /would be +p.p. 含情态动词的被动结构：情态动词+be+p.p.例如： ① Chinese ______ by the largest number of people. A.speak B.is speaking C.speaks D.is spoken (选D。考查一般现在时的被动语态) ② The boy ______ to get supper ready after school. A.were told B.is telling C.was told D.tells (选C。考查一般过去时的被动语态) ③ A lot of new roads ______ built in the west of China. A.must B.must be C.has D.have (选B。考查含情态动词的被动语态) | 
