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.