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语法精讲非谓语动词非谓语动词被动语态的意义 1.不定式 (1)表示被动的意义 The party is to be held next weekHe wanted to be sent to the hard area. (2)有时主动形式表示被动的意义，同被动没什么区别，具有“应该”“值的”的意思。不定式是主语的承受者，但有时作某些形容词的宾语，如：nice,easy,hard,difficult,fit,suitable,good,heavy,comfortable,cheap等。The box is not strong enough to stand this. It’s too small to see. There is a lot of jobs to do. The house is to let at low rent. I am not to blame. Houses are still to seek. Much remains to do. The passage is hard to learn. 2.动名词 (1)表示被动的意义 He insisted on being sent to the hard area. (2)在动词need,require等的主动语态和形容词worth后，表示被动的意义 My watch needs repairing. The book is worth reading. 3.分词 (1)现在分词表示被动的意义 The building being built is a school. Not having been told,he didn’t know where to start. (2)过去分词表示被动的意义 Heated,the metal expands. | 
