被动语态由be+过去分词构成,be随时态的变化而变化。以give为例,各种时态的被动语态形式为:一般现在时:am/is/are+given以下是小编为大家搜索整理了2017英语四级被动语态的构成讲解,希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!

  【例句】

  The first section of New College English is designed for speaking practice and is based on pictures and topics.

  一般过去时:was/were+given

  【例句】

  These computers were made in our own country.

  一般将来时:will/shall be+given

  【例句】

  Shall we be asked to attend the opening ceremony?

  Sir Denis, who is 78, has made it known that much of his collection ____to the nation. (CET-4 1996, 6)

  A) has left B) is to leave

  C) leaves D) is to be left

  本句意思为:78岁的Denis先生声明他将把他的大多数收藏品留给国家。所以leave应用一般将来时的被动形式。一般将来时可以用来be to do sth表达,因此答案为D.

  过去将来时:would be+given

  【例句】

  The news would be sent to the soldier's mother as soon as it arrived.

  现在进行时:am/is/are being+given

  【例句】

  The machine is being repaired in the workshop. The fifth generation computers, withartificial intelligence, are ____and perfected now. ( CET-4 1996,1)

  A) developed B) have developed C) are being developed D) will have been developed

  本句测试点是动词的时态和语态。develop和perfect是两个并列的谓语动词,perfect用的是被动形式,develop也应该用被动形式,而且句子的时间状语为now,故develop应用现在进行时的被动语态,答案为C。

  过去进行时:was/were being+given

  【例句】

  The feast was being prepared when the birds arrived in the sky

  现在完成时:has/have been+given

  【例句】

  Swift progress has also been made in culture and education.

  过去完成时:had been+given

  【例句】

  The huge bridge had been damaged before the World WarⅡ.

  将来完成时:will/shall have been+given

  【例句】

  The book will have been published by the end of next month.

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