chuyển sang bị động thì hiện tại hoàn thành :
1. they have not used this machine for ages.
2. peter has sung this song.
3. she has eaten all the eggs.
4. famous engineers have designed the aircraft.
5. Have several people just seen the accidents?
6. The news has surprised me.
7. John has broken my watch.
chuyển sang bị động thì hiện tại hoàn thành :
1. they have not used this machine for ages.
=>This machine hasn't been used for ages
2. peter has sung this song.
=>This song has been sung by Peter
3. she has eaten all the eggs.
=>All the eggs have been eaten
4. famous engineers have designed the aircraft.
=>The aircraft has been designed by famous engineers
5. Have several people just seen the accidents?
=>Have the accidents just been seen by several people?
6. The news has surprised me.
=>I have been surprised by the news
7. John has broken my watch.
=>My watch has been broken by John
