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4)短语动词变为被动语态 有些短语动词相当于一个及物动词，其后可以接宾语，因此它们也有被动语态，但短语动词是不可分割的整体，变为被动语态时不可去掉其后面的介词或副词。 (主动)We should look after the patients very well. (被动)The patients should be looked after very well by us. 5)宾语从句变为被动语态 若主动语态中是宾语从句，变为被动语态时常用it作形式主语，而把真正的主语放在后面。 It‘s said that he passed the exam. 被动语态应注意的几个特殊问题： (1)不及物动词带介词和介词宾语，在变为被动语态时，仍然要带上介词。 (主动)The students in class listen to the teacher carefully. (被动)The teacher is listened to carefully by the students in class. (2)当动词带有复合宾语时，并且宾补是省去“to”的动词不定式时，在被动语态中应加上“to”。 (主动)They make do all the work. (被动)We were made to do all the work. (主动)We often hear her sing English songs. (被动)She is often heard to sing English songs. (主动)I see him walk to school. (被动)He is seen to walk to school. (责任编辑：admin) |