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2020年中考英语知识点之被动语态的基本时态变化

http://www.newdu.com 2019-10-17 中考网 佚名 参加讨论

    中考网整理了关于2020年中考英语知识点之被动语态的基本时态变化,希望对同学们有所帮助,仅供参考。
    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
    例Visitors are requested not totouch the exhibits.
    2) has /have been done 现在完成时
    例All the preparations for thetask have been completed, and we're ready to start.
    3) am/is /are being done 现在进行时
    例A new cinema is being builthere.
    4) was/were done 一般过去时
    例I was given ten minutes todecide whether I should reject the offer.
    5) had been done 过去完成时
    例 By the end of last year,another new gymnasium had been completed in Beijing.
    6) was/were being done 过去进行时
    例A meeting was being held when Iwas there.
    7) shall/will be done 一般将来时
    例Hundreds of jobs will be lostif the factory closes.
    8) should/would be done 过去将来时
    例The news would be sent to thesoldier's mother as soon as it arrived.
    9) shall/will have been done 将来完成时(少用)
    例The project will have beencompleted before July.
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