1. This bridge has been built for 4 months

2. This film has been broadcasted since last year

3. This exercise has been done for 2 hours

This bridge has built for 4 months

This film has broadcast since last year

This exercise has done for 2 hours

1. People have built this bridge for 4 months. 

=> This bridge has been built for 4 months.

2. They have broadcast this film since last year.

=> This film has been broadcasted since last year.

3. We have done this exercise for 2 hours.   

=> This exercise has been done for 2 hours​.

1.      They have broadcast this film since last year.→…This fim has been broadcasted since last year……………

2.      We have done this exercise for 2 hours.     →……This exercise has been done for 2 hours (by us).………

1. A doctor examined the elephant 

-> The elephant was examined by a doctor

2. They took it back to the zoo

-> It was taken back to the zoo

3. The club bought him 2 years ago for a fee of $20 000

-> He was bought 2 years ago for a fee of $20000 by the club

4. Stephen made this film in Hollywood last year

-> This film was made in Hollywood by Stephen last year

5. Irish fisherman used this kind of boat one thousand years ago

-> This kind of boat was used by Irish fisherman one thousand years ago

6. Redwood took the photos during his voyage 

-> The photos were taken by Redwood during his voyage

7. Lisa wrote all the songs on this new album 

-> All the songs on this album was written by Lisa

8. They print the words to all the songs on the back of the cover

-> The words are printed to all the songs on the back of the cover

9. They will repeat this documentary on BBC next week 

-> This documentary will be repeated on BBC next week

10. Now people find this kind of bird in only a few remote places in Scotland 

-> This kind of bird now be found in only a few remote places in Scotland 

11. This kind of bird is protected by laws 

-> Laws protect this kind of bird

1.A lot of plays has been written by my brother

2. His second tragedy has been finished

3.My homework haven't been done.

4.The moon has been seen by you

5.That book has been read by him when he was a boy

6.The thief has been caught by the police

7.This film has been seen by her a several times

8.

The passive voice of the present perfect

1. My brother has written a lot of plays

-> A lot of plays have been written by my brother.

2. He has finished his second tragedy.

-> His second tragedy has been finished by him.

3. I haven't done my homework

-> My homework hasn't been done by me.

4. You have seen the moon

-> The moon has been seen by you.

5. He has read that book since he was a boy

-> That book has been read by him since he was a boy.

6. The police has caught the thief

-> The thief has been caught by the police.

7. She has seen this film several times.

-> This film has been seen by her several times.

8. We have learnt English for two years.

-> English has been learnt by us for two years.

9. I have used this bike for 15 years

-> This bike has been used by me for 15 years.

10. Nam has painted his house since last year

-> His house has been painted by Nam since last year.

11 They have not used this machine for ages

-> This machine hasn't been used by them for ages.

12. Peter has sung this song

-> This song has been sung by Peter.

13. They have paid doctors a lot of money

-> Doctors have been paid a lot of money by them.

Exercise 4: Change to past simple

1, Children have broken the window for 10 minutes.

=> The window has been broken by children for 10 minutes.

2, She has brought her dog to the meeting.

=> Her dog has been bought to the meeting.

3, We have built this house since 1970.

=> This house has been built since 1970.

4, Tom has bought a car for a long time.

=> Tom's car has been bought for a long time.

6, Students have did their homework.

=> Students' homework was done.

7, She has drawn a nice picture.

=> A nice picture has been drawn by her.

8, You have drunk a lot of coca.

=> A lot of coca has been drunk by you.

9, The princess has lost her shoe.

=> The princess's shoe have been lost.

10, They have seen this film when they were 15.

=> This film has been seen when they were 15.

PRESENT PERFECT PASSIVE VOICE Change the following sentences to PASSIVE VOICE(Omit by someone or by them):

1-. We have seen that film before.

-> That film has been seen before.

2. They have written three books.

-> Three books have been written.

3-. They have played tennis since 2018.

-> Tennis has been played since 2018.

4- Someone has smoked 30 cigarettes in my party.

-> 30 cigarettes have been smoked in my party.

5. Scientists have recently discovered a new breed of monkey.

-> A new breed of monkey has been recently discovered by scientists. 

6-- We have bought a new car this week.

-> A new car has been bought this week.

1 The pollution problems has been discussed since last month

2 Is this bicycle going to be repaired by him?

3 Has the invitation cards been sent to your friends?

4 The sofa was moved into the living room by my father

5 I am imformed that the manager is going to travel to Germany

1. She doesn’t have enough money, so she can’t buy this car.

-> If ……………………she had enough money, she could buy this car………………………………………..

2. I last heard from my sister 5 months ago.

-> I haven’t ……………heard from my sister for 5 months…………………………………………

3. They have built two department stores this year.

-> Two department ……………stores have been built this year…………………………………

4. “ My grandparents still live in Nha Trang now.” Lan said to me.

-> Lan told me that ……………her grandparents still lived in NT then…………………………………..

5. Mr Nam couldn’t continue his work because he was tired.

-> Mr Nam was too ………tired to continue his work………………………………………