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被动语态的构成形式
⒈ 被动语态的基本时态变化
被动语态通常为十种时态的被动形式,被动语态由be+过去分词构成,be随时态的变化而变化。以do为例,各种时态的被动语态形式为:
(1)am/is/are + done(过去分词)一般现在时
(2)has /have been done 现在完成时
(3)am/is /are being done现在进行时
(4)was/were done 一般过去时
(5)had been done 过去完成时
(6)was/were being done 过去进行时
(7)shall/will be done 一般将来时
(8)should/would be done 过去将来时
(9)shall/will have been done将来完成时(少用)
(10)should/would have been done 过去将来完成时(少用)