1 We can't improve the public telephone service this year

=> The public telephone service can't be improved this year

2 you ought to do all the work on your own

=> All the work ought to be done on your own

3 does she have to feed the pigeons twice a day?

=> Must the pigeons be fed twice a day by her?

4. They must report it to the police or it will be too late

=> It must be reported to the police or it will be too late

Chuyển sang câu bị động

1 How was the lost man found by the police

2 By whom are the children looked after for you?

3 How long has the doctor been waited for 

4 What time can their papers be handed in by the boys

5 By whom are you lent this book

6 How many marks are given to you by the teacher

1. I will send you the final version of this report tomorrow.

The final version of this report will be sent to you tomorrow

2. Will she be taken to the hospital right after you pick her up?

Will someone take her to the hospital right after you pick her up

3. I’m sure they will complete the new road in June.

I'm sure the new road will be completed in June

4.  You mustn’t use this machine after 5:30 p.m.

This machine musn't be used after 5.30 pm

5. We can never find him at home for he is always on the move.

He can never be found at home for he is always on the move.

1. The wine should be opened about three hours before you use it.

2. Bicycles mustn't be left in the hall.

3. The car might be stolen.

4. The room must be kept tidy by you.

5. The problem can't be solved by them.

1. You should open the wine about three hours before you use it.
=> The wine should be opened about three hours before you use it

2. You must not leave bicycles in the hall.
=> Bicycles mustn't be left in the hall

3. Someone might steal the car.
=> The car might be stolen.

4. You must keep the room tidy.
=> The room must be kept tidy

5. They can't solve the problem.
=> The problem can't be solved

1. Will you invite her to your wedding party?

will she be invited to your wedding party?

2. Has Tom finished the work?

has the work been finished by tom?

3. Did the teacher give some exercises?

were some exercises given by the teacher?

4. Have they changed the window of the laboratory?

has the window of the laboratory been changed?

5. Is she going to write a poem?

is a poem going to be written?

ex 1:
1. Their room is being tidied now
2. Jack's house is repainted once every year by him
3. This computer is going to be sold by us
4. Milk is used for making butter and cheese by them
5. Is English taught here
6. Two different kinds of dictionaries are given to me by her
7. Good care must be taken of books borrowed from the library by us
8. I am often told many things about the war by my father
9. Will she be invited to your wedding party by them
10. Some electric devices were being repaired by him then
ex 2:
1. The librarian let me borrow three books
2. I don't mind teaching you how to use the software
3. We are planning to spend our holiday in Hong Kong
4. You had better not make them angry
5. It is her duty to be responsible for records of the cafe expenses
6. According to some family experts, single-parent families will be more and more common in the future
7. It is likely that they will probably come late for the meeting

Cloth puppets didn’t use to be made.

Cloth puppets weren't used to made by her.