英语被动语态总结一、被动语态的构成形式1
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Visitors are requested not to touch the exhibits
2)has /have been done 现在完成时All the preparations for the task have been completed, and we're ready to start
3)am/is /are being done 现在进行时A new cinema is being built here.4)was/were done 一般过去时I was given ten minutes to decide whether I should reject the offer
5)had been done 过去完成时By the end of last year, another new gymnasium had been completed in Beijing
6)was/were being done 过去进行时A meeting was being held when I was there
7)shall/will be done 一般将来时Hundreds of jobs will be lost if the factory closes
8)should/would be done 过去将来时The news would be sent to the soldier's mother as soon as it arrived
9)shall/