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


　　【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, with artificial 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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