4. 一般将来时的被动语态构成:will+ be + 及物动词的过去分词 Many more trees will be planted next year.
5. 含有情态动词的被动语态构成:情态动词+ be + 及物动词的过去分词 Young trees must be watered often.
6. 现在进行时的被动语态构成:am / is / are + being + 及物动词的过去分词 Uncle Wang is mending my bike now. My bike is being repaired by Tom now.
7. 不定式的被动语态:to + be + 及物动词的过去分词 There are tw o books to be read. There are twenty more trees to be planted.
三、使用被动语态应注意的几个问题:
1. 不及物动词无被动语态。 What will happen in 100 years. The dinosaurs disappeared about 65 million years ago.
2. 有些动词用主动形式表示被动意义。This pen writes well. This new book sells well.
3. 感官动词或使役动词使用省 略to的动词不定式,主动语态中不带to,但变为被动语态时,须加上to。 例:make somebody do somethingsomebody+ be +made to do something see somebody do so methingsomebody +be +seen to do something The boss made the little boy do heavy work.The li ttle boy was made to do heavy work by the boss.
4. 如果是接双宾语的动词改为被动语态时,直接宾语(物)作主语,那么动词后要用介词,这个介词是由与其搭配的动词决定。 He gave me a book.A book was given to me by him. He showed me a ticket.A ticket was shown to me by him.
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