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Who’ve made all the arrangements?
By whom have all the arrangements been made ?
Have buses brought the children home?
Have the children brought home by buses ?
How long have they waited for the doctor?
How long has the doctor been waited for ?
A group of students have met their friends at the railway station
a group of student's friends have been met at the railway station.
1) They have to repair the enigine of the car.
The engine of the car have to been repaired by them.
2) John used to visit his parents at weekends.
His parents used to be visited at weekends by John.
1) They have to repair the engine of the car
--> the engine of the car has to be repaired by them
2)
John used to visit his parents at weekends
----> his parents used to be visited by John at weekends.
1.they have given many talks on history and development of may day.
=>Many talks ........on history and development of may day have been given.......................................
2.the clowns made the audience laugh a lot.
=> the audience......was made laugh a lot by the clowns.................
3.they say that he has built this house for sale.
=>this house......is said to have been built by him for sale................
4. He had someone repair his roof yesterday.
=>he had his roof......repaired yesterday............
5.i need to polish my shoes .
=>my shoes need....polishing by me.......
1 , The teacher returned our written work to us
=>our written work was returned to us by the teacher
2, She had finished her report by noon
=>the report has been finished by noon by her
3, The mad dog bit the little boy
=>The little boy was bitten by the mad dog
4, Lightening struck the house
=>the house was struck by lightning
5, This is second time they have written to us about this
=>This is the second time we have been written to about this
1 , The teacher returned our written work to us
our written were returned work to us by the tacher.
2, She had finished her report by soon
soon,her report have finished .
3, The mad dog bit the little boy
the little boy is bitted by the mad dog
4, Lightening struck the house
the house is struck by lightening.
5, This is second time they have written to us about this
this is second time,we have been wriiten abou this
chuyển sang câu bị động:
1. Have you sent the christmas cards to your family?
have the christmas cards been sent to your family?
2. The committee appointed Alice secretary for the meeting.
Alice secretary was appointed by the committee for the meeting
3. He hides the broken cup in the drawer.
the broken cup is hided in the drawer
4. They keep this room tidy all the time.
this room is kept tidy all the time
5. They all voted the party a great success.
the party was voted a great success by them
1. Have the christmas cards been sent to your family?
2. Alice was appointed secretary for the meeting by the committee.
3. The broken cup is hidden in the drawer by him.
4. This room is kept tidy by them all the time.
5. The party was voted a great success by them.
Your address should be written on the parcel.
(Mik ko chắc đúng 100% đâu )
1) The factory will prodice 10,000 cars next year.
=> 10,000 cars will be produced by the factory next year
2)People think that the computer was made in USA( Same height)
=> It is thought that the computer was made in USA
The computer is thought to have been made in USA
Mình nghĩ thế..
1, 10,000 cars will be prodice by the factory next year
2, It is thought that the computer was made in USA
Chúc bạn học tốt 
Chuyển câu sau sang bị=>chủ động
1.All the arrangements have been made.
➜...They have made all the arrangements....