Ex1:Change into passive voice using the Past Simple Tense Form: S+was/were+V-PII+(by+0)
1.Nam broke the window last night.
->The window was broken by Nam last night.
2.They built that hospital last month.
->That hospital was built last month.
3.I took the books to the library.
->The books were taken to the library by me.
4.The shoemakers made the shoes.
->The shoes were made by the shoemakers.
5.Did you write these letters?
->Were these letters written by you?
6.The wind blew two big trees down.
->Two big trees were blown down by the wind.
7.They gave me a new book yesterday.
->A new book was given me yesterday./ I was given a new book yesterday.
8.People proved him wrong.
->He was proved wrong.
9.A violent storm destroyed the city last week.
->The city was destroyed by a violent storm last week.
10.Did your daughter eat that pie?
-> Was that pie eaten by your daughter?
11.What play did Shakespeare write?
->What play was written by Shakespeare?
12.Who wrote this novel?
->Who was this novel written ?
By thom...........?
13.Last night,my grandmother told us a very interesting story.
->Last night,we were told a very interesting story by my grandmother.
14.Her husband didn't love her.
->She wasn't loved by her husband.
Ex2:Change into passive voice using the Past Continuous Tense:Form: S+was/were+being+PII+(by+0)
1.Waiters and waitresses were serving customers.
->Customers were being served by waiters and waitresses.
2.Was Mary helping her mother in the kitchen at that time?
->Was her mother being helped in the kitchen by Mary at that time?
3.The president was signing those papers.
->Those papers were being signed by the president.
4.What were you doing at this time yesterday?
->What was being done (by you) at this time yesterday?
5.The head teacher was making the announcement.
->The announcement was being made by the head teacher.
6.Someone was cleaning the windows while i was there.
->The window was being cleaned while I was there.
7.They were representing the athletes to the spectators when we came.
->The athletes were being represented to the spectators when we came.
8.Two horses were pulling the farmer's wagon.
->The farmer's wagon was being pulled by two horses.
9.Someone was making the coffee when i walked in to the kitchen.
->The coffee was being made when I walked in to the kitchen.
Ex3:Change into passive voice using the Present Perfect Tense.Form: S+have/has+been+V-PII+(by+0)
1.No one has opened this window for ages.
->This window has been opened for ages.
2.No one has ever asked me that question before.
->I have been asked that question before.
3.They haven't done any thing since he left.
->Nothing hasn't been done since he left.
4.A doctor has just examined John.
->John has just been examined by a doctor.
5.They have not used this machine for ages.
->This machine hasn't been used for ages.
6.They have paid the doctor a lot of money.
->The doctor has been paid a lot of money.
7.Who has written that novel?
->Who has that novel been written?
->By whom..................
8.Have several people seen the accident?
->Has the accident been seen by several people?
9.John has broken my watch since this morning.
->My watch has been broken by John since that morning.
Ex4:Change into passive voice using the Future Simple Tense:Form: S+will be+VpII+(by+0)
1.We will publish the library card soon.
->The library card will be published by us soon.
2.His family will see him off at the airport.
->He will be seen off at the airport by his family.
3.Somebody will tell you where to go.
->You will be told where to go.
4.His sister will make a big birthday cake tomorrow.
->A big birthday cake will be made by his sister tomorrow.
5.Someone will clean the room.
->The room will be cleaned.
6.They will ask you several questions.
->You will be asked several questions.
7.Someone will read you another chapter next time.
->You will be read another chapter the following time.
8.Ba is going to help his brother to do his homework tonight.
->His brother is going to be helped to do his homework by Ba that night.
9.I'm going to buy a new house next month.
->A new house is going to be bought by me the following month.
Ex5:Change into passive using the Modal verbs.Form: S+Md(can,may,will,ought to,have to,must,...)+be+VpII+(by+0)
1.We will have to repair our car soon.
->Our car will be had to repair by us soon.
2.Passengers shouldn't throw away their tickets.
->Their tickets shouldn't be thrown way by passengers.
3.Students may not use dictionaries in the examination.
->Dictionaries may not be used in the examination by students.
4.A machine could do this work much more easier.
->This work could be done much more easier by a machine.
5.They can not hold the meeting in this room.
->The meeting can't be hold in that room.
6.People ought to tell us how much they expected us.
->We ought to be told how much they expected us.
7.You must keep your room tidy.
->Your room must be kept tidy.
8.He shouldn't do that silly thing again.
->That silly thing shouldn't be done again by him.
9.We can solve the problem.
->The problem can be sloved by us.
a) Vì d là tiếp tuyến của (O)