1.何时运用被动语态:
(1)强调动作的接受者:America was discovered by Columbus.
(2)不知谁是动作的执行者:You are wanted on the phone.
(3)作客观说明:It is said that the meeting has been put off.(经典句型)
2.主动变被动的基本方法:(说起来容易,掌握起来需要用心!)
(1)主动语态中的宾语变为被动语态的主语。
(2)谓语动词变为由“be + 过去分词”的形式,配合时态作相应变化。
(3)主动语态主语置于介词 by之后,如无必需,则省略。
(4)不及物动词没有被动语态。
现 在 do (does) →am / is / are + done
We keep the piano in the living-room.
→The piano is kept in the living-room.
过 去 did→was / were + done
They built the bridge in 1980.
→The bridge was built in 1980.
将 来 shall shall
will do → will + be + done
He will read the book tomorrow.
→The book will be read tomorrow.
现在完成 have have
has done → has + been + done
We have delivered the newspaper.
→The newspapers have been delivered (by us).
过去完成 had done → had been done
She had seen the film before she came here.
→The film had been seen before she came here.
将来完成 shall shall
will have done → will have + been + done
By the end of this term we shall have finished 80 texts.
→By the end of this term 80 texts will have been finished.
现在进行 am am
is doing → is + being + done
are are
They are drawing the picture.
→The picture is being drawn by them.
过去进行 was doing → was + being + done
were were
He was reviewing their lessons at this moment yesterday.
→Their lessons were being reviewed at this moment yesterday.
情态动词 may may
can can
must must
should do → should + be + done
ought to ought to
used to used to
You must write an article on the subject.
→An article must be written on the subject.
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