Chuyển sang câu bị động
1.People celebrate Christmas around the world
=>Christmas
2.She feeds the pigs twice aday
=>The pigs
Chuyển sang câu bị động
1.People celebrate Christmas around the world
=>Christmas
2.She feeds the pigs twice aday
=>The pigs
1.People celebrate Christmas around the world =>Christmas is celebrated around the world .
2.She feeds the pigs twice aday =>The pigs are fed twice a day.