精选优质文档-倾情为你奉上高中英语被动语态总结一、需要使用被动语态的情况在以下情况常需要使用被动语态:1. 讲话者不知道动作的执行者或不必说出动作的执行者 (这时可省 by 短语)。My bike was stolen last night.2. 借助被动的动作突出动作的执行者。I was given ten minutes to decide whether I should accept the offer.3. 为了更好地安排句子。The well-known person got on the bus and was immediately recognized by people. (一个主语就够了)二、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 d