1.She did not introduce me to her mother.
-> I was not introduced to her mother by her
2.The government has not changed the regulation.
-> The regulation hasn't been changed by the government
3.They are repairing my piano at the moment.
-> My piano is being repaired at the moment.
Chuyển các câu sau sang câu bị động;
1,She did not introduce me to hẻ mother.
=>I wasn't introduced to hẻ mother by her
2.The government has not changed the regulation.
=>the regulation hasn't been changed
3.They are repairing my piano at the moment
=>my piano is being repaired at the moment