1 Were they noticed to swim in pool? 

2 I was made to wash shoes carefully

3 It is said that he worked 2 years ago

11. They clean the floor every morning. -> The floor ___is cleaned every morning__________

12. They will solve the problem soon. -> The problem ______will be solved soon_________

13. They break the glass into small pieces. -> The glass _______is broken into small pieces__________

15. They made these cars in the USA. -> These cars ____was made in the USA____________

16. People have used the Internet all over the world. -> The Internet ___has been used all over the world___

17. We planted many trees in the school garden. -> Many trees ___were planted in the school garden____

18. Someone has taken my book away. -> My book _____has been taken away___________

19. He didn't help me with my homework. -> I ____wasn't helped with my homework______

20. We have learnt English for three years. -> English ______has been learnt for three years_____

21. My father often reads books before bedtime . -> Books .......are read by my father before bedtime.....................

22. Lan bought some comic books for her brother . -> Some comic books ......were bought by Lan for her brother.............

23. My sister received a letter yesterday . -> A letter ........was received by my sister yesterday..........

24. She can solve the problem in just 2 minutes . -> The problem ...........can be solved in just 2 minutes..............

25. Nowadays people use electricity for lighting. -> Electricity .......is used for lighting................................

1. People grow rice in many countries in the world. -> Rice ____is grown in many countries in the world ________

2. Graham Bell invented the telephone many years ago. -> The telephone ____was invented by Graham Bell many years ago_

3. They have used this car for many years. -> This car _____has been used for many years_______________________

4 , Lan praces English every day. -> English ___is praced by Lan everyday_________________________________

5. They will take the garbage out of the city. -> The garbage ____will be taken out of the city_________________________

6. Mary sent me this letter two days ago. -> I ____was sent this letter by Mary two dáy ago_______

7. People make compost from vegetables. -> Compost ____is made from vegetables___________

8. You must finish this work before Sunday. -> This work ____must be finished before Sunday_________

9. She hasn't used this bicycle for a long time. -> This bicycle ___hasn't been used for a long time_____

10. I saw a strange man in my garden yesterday. -> A strange man _____was seen in my garden yesterday_ 

1. Rice is grown in many countries in the world.

2. The telephone was invented by G.Bell many years ago.

3. This car has been used for many years.

4. English is praced by Lan every day.

5. The garbage will be taken out of the city.

6. I was sent a letter by Mary two days ago.

7. Compost is made from vegetables.

8. This work must be finished before Sunday.

9. This bicycle hasn't been used for along time.

10. A strange man was seen in my garden yesterday.

11. The floor is cleaned every morning. 

12. The problem will be sold soon.

13. The glass is broken into small pieces.

15. These cars were made in the USA.

16. The Internet has been used all over the world.

17. Many trees were planted in the school garden.

18. My book has been taken away.

19. I wasn't helped with my homework.

20. English was learned for 3 years.

21. Books are often read by my father before bedtime.

22. Some comic books were bought by Lan for her brother

23. A letter was received by my sister yesterday.

24. The problem can be solved in 2 minutes.

25. Electricity is used for lighting nowadays.

k mik nha

1. Have many cultural activities been organized recently?

2. Has the grass been cut for hay by the farmers?

3. I was lent this book by my brother. / This book was lent to me by my brother.

1. Have many cultural activities been organized recently?

2. Have the grass been cut for hay by the farmers ?

3. This book was lent to me by my brother.

1. The tickets are often sold at the gate. 

2. This school was built by the workers 20 years ago. 

3. Some cakes are made every day. 

4. Emails are written by Ngoc every night. 

5. Many books were collected last week. 

6. Their house is not cleaned every day. 

7. The postcard was not received by Thao at Tet.

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 man might be sent to prison.

2. Something must be done now.

3. People aren't liked starting at me.

4. People aren't liked making jokes about me.

5. The rice from the husk was separated . 

6. A fire by their camp was made by the boys.

7. This house was built more than one hundred years ago.

8. His book was published in 1996

Somebody built the house ten years ago.

->The house was built ten years ago.

the house was built by somebody ten years ago

Chuyển sang câu bị động

People didn't organize this festival some years ago

=>This festival wasn't organized some years ago

This festival wasn't organize by people some years ago