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 week.[来源: He 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 l
ot 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[来源: (
1)表示被动的意义 He insisted on
b
eing 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[来源: ] (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.