精选优质文档-倾情为你奉上一、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 2) has /have been done 现在完成时3) am/is /are being done 现在进行时4) was/were done 一般过去时5) had been done 过去完成时6) was/were being done 过去进行时7) shall/will be done 一般将来时8) should/would be done 过去将来时9) shall/will have been done 将来完成时(少用)10) should/would have been done 过去将来完成时(少用)2. 被动语态的特殊结构形式1)带情态动词的被动结构。其形式为:情态动词be过去分词。例Th