内容正文:
Unit 3 Pets
Grammar :
Passive voice(Ⅱ)
被动语态二
(5)现在进行时( is/ am/ are +doing)
被动结构---am/is / are+ being+ done
Eg: They are repairing the desk.
----The desk is being repaired (by them).
(6) 过去进行时(was/were +doing)
被动结构--- was/were+ being+ done
Eg: Cindy was doing the homework when he came.
----The homework was being done when he came.
时态的被动语态
My mother is sweeping the floor now.
The floor is being swept by my mother now.
(7)现在完成时 ( has/ have +done)
被动结构---has/have+ been+ done
Eg: He has told me the truth .
----I have been told the truth (by him).
(8)过去完成时 ( had+ done)
被动结构---had+ been+ done
Eg: I heard they had finished the task.
----I heard the task had been finished (by them)
时态的被动语态
The students have planted many trees by now.
Many trees have been planted by the students by now.
(9)情态动词 (can/may/must等情态动词 + do)
---被动结构 can/may/must+ be+done
Eg: You must clean the desk now.
----The desk must be cleaned now.
情态动词的被动语态
They can sing some beautiful songs.
Some beautiful songs can be sung by them.
Our students mustn’t smoke cigarettes.
Cigarettes mustn’t be smoked by our students.
●选择填空
What kind of advice _______to you?
has gave B. was gave
C. has been given D. has given
Exercise
Exercise
一 将下列句子改为被动语态
1 . We have never heard such a thing.
Such a thing has never been heard by us.
2 The nurse will look after the children.
The children will be looked after by the nurse .
3 We can’t put up with such rudeness.
Such rudeness can’t be put up with by us.
二 用动词的适当形式填空
1 . The big stone(must remove)_____________at once.
2 . Vast areas of the city (destroy)_________ during the war.
must be removed
were destroyed
Using
1.A new library ________ there. We can use it at the beginning of next term.
A.is built B.is being built C.has been built D.should be built
2.I have to go to work by taxi because my car ________ at the garage.
A.is repaired B.has repaired C.has been repaired D.is being repaired
3.A