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1. 不定式的被动语态 由to be+过去分词构成。如： He needs to be taken care of. 他需要人照顾。 Not a sound was to be heard. 听不到一点声音。 Its better to be prepared than unprepared. 有准备比没有准备好。 【注】有时用不定式的完成体被动式(to have been+过去分词)： I should like to have been told the result earlier. 我本想让人把结果早点告诉我。 2. 现在分词的被动语态 由being+过去分词构成。如： The building being repaired is our library. 正在维修的那座楼是我们的图书馆。 Being protected by a wall，he felt quite safe. 有一堵墙保护，他感到很安全。 He was seen being taken away by the police. 有人看见他被警察带走了。 【注】有时用现在分词的完成体被动式(having been+过去分词)： Having been invited to speak, Ill start making preparations tomorrow. 因为邀请我去讲话，我明天就得做准备。 3. 动名词的被动语态 由being+过去分词构成。如： She likes being looked at. 她喜欢被人瞧。 He objected to being treated as a child. 他反对被当成孩子看待。 | 
