Chuyển sang câu bị động
11. They rub pieces of bamboo together to make a fire
12. Will you invite your friends to your birthday party?
13. We can't finish all my homework soon
14. People say that he works very hard
15. Do they speak English at scholl?
16. Has some one posted the letters?
17. Some one has already told him the whole truth
18. People are spending a lot of money on food now
19. Why don't they mend the roof before is falls in
20. Visitors must leave umbrellas and sticks in the cloakroom
Chuyển sang câu bị động
11. They rub pieces of bamboo together to make a fire
=>pieces of bamboo are rubbed together to make a fire
12. Will you invite your friends to your birthday party?
=>will your friends be invited to your birthday party?
13. We can't finish all my homework soon
=>all my homework can't be finished soon
14. People say that he works very hard
=>it is said that he works very hard
15. Do they speak English at scholl?
=>is E spoken at school
16. Has some one posted the letters?
=>have the letters posted
17. Some one has already told him the whole truth
=>he has already been told the whole truth
18. People are spending a lot of money on food now
=>a lot of money is being spent on food now
19. Why don't they mend the roof before is falls in
=>why isn't the roof mended before is falls in
20. Visitors must leave umbrellas and sticks in the cloakroom
=>umbrellas and sticks must be left in the cloakroom by visitors
Chuyển sang câu bị động
11. They rub pieces of bamboo together to make a fire
=> Pieces of bamboo are rubbed together to make a fire
12. Will you invite your friends to your birthday party?
=> Will your friends be invited to your birthday party?
13. We can't finish all my homework soon
=> All my homework can't be finished soon
14. People say that he works very hard
=> He is said to work very hard
15. Do they speak English at scholl?
=> Is English spoken at school?
16. Has some one posted the letters?
=> Have the letters been posted by someone?
17. Some one has already told him the whole truth
=> The whole truth has already been told to him by someone
18. People are spending a lot of money on food now
=> A lot of money is being spent on food now
19. Why don't they mend the roof before is falls in
=> Why isn't the roof mended before it falls in
20. Visitors must leave umbrellas and sticks in the cloakroom
=> Umbrellas and sticks must be left in the cloakroom by visitors
