另外注意以下几点:
1.含情态动词的被动语态:
can / may / must / should + be + 过去分词
eg. He may be sent away from school.
2.带动词不定式的被动语态
eg. My bike needs to be mended.
3.在使用被动语态时,如需要指出动作执行者时,应用by + 动作的执行者(宾格)
eg. He was called Mike by us
4.不及物动词无被动语态(take place/ happen ; last ; rise ; sink ; fall等)
eg. The accident was happened two days ago (改错) _________
5.当宾语补足语是省to不定式时,在改作被动语态之后,应将省去的to还原。
eg.The boss made the workers work 12 hours.
The workers were made to work 12 hours.
6.注意短语动词的完整性(即:主动句的谓语动词若由v + prep / adv构成,变被动语态时,不能将这些介词、副词遗漏。
eg. We must take care of the baby.
The baby must be taken care of.
练 习 题
( )1.This factory has been____ for two years
A. open B. to open C. opening D. opened
( )2.The light in the room ___ before you leave. A. must turn off B. will turn off
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