Tips: Trong giao tiếp hàng ngày, until thường xuất hiện trong các câu phủ định nhiều hơn by.

1. What time will the package arrive ? 
2. The package won't come next Thursday. 
3. We have lots of time. The movie doesn't start 7:00 pm. 
4. Most Koreans live with their family they get a full-time job. 
5. Most Koreans move out the time they get a full-time job. 
6. I go to sleep 1:00 am almost every night. 
7. I stay up 1:00 am almost every night. 
8. Let's work on this 6:00 pm and then go home if we finish. 
9. Let's try to finish and go home 6:00 pm. 

1. Please wait. Our doctor will come back in 15 minutes.
2. She is very busy. She’ll be free only after 6 o’clock.
3. You must not go out. I will let you go.
4. The children behaved impertinent. The adults scolded them.
5. The doctor told me not to worry about my mother’s health. Only then was I relieved.

1. The champion of the tournament can win $30.000. 
2. He can't be the thief; he never left home 5 pm. 
3. Yesterday, we studied midnight. 
4. The ambulance took the patient the hospital. 
5. He repeated the English word he knew it by heart.