1．语态定义：英语中表示主语和谓语之间的关系的动词形式称为语态。英语的语态分为主动语态和被动语态。主动语态表示主语是动作的执行者，被动语态表示主语是动作的承受者。We teach English in our school .(主动) English is taught in our school .（被动）
2．被动语态：助动词Be + 及物动词的过去分词（be +p.p.），be有人称、时态和数的变化。见下表：
时态谓语动词的形式例子
一般现在时 Am / is / are + 动词过去分词 Colour TVs are made in the factory .
一般过去时 Was / were +动词过去分词 My hometown was liberated in 1949 .
一般将来时 Shall / will + be +动词过去分词 The film will be shown again .
现在进行时 Am / is / are + being +动词过去分词 The walls are being painted .
过去进行时 Was / were +being动词过去分词 The tickets were being well sold then .
现在完成时 Has / have + been + 动词过去分词 A new road has been built here .
时态谓语动词的形式例子
过去完成时 Had + been +动词过去分词 Much had been done before mother came back .
含有情态动词的被动语态 情态动词＋be＋动词过去分词 The composition must be handed in today .
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