aYou must know you've been scheduled to have an operation the day after
您一定知道,您的手术安排在后天。
bYes. But I don't know the exact time.
是的,但是我不知道确切时间。
aThe operation starts at 10 0'clock. But you'll get an injection of anaesthesia about 30 to 45 minutes in advance. If your family comes to see you before the operation, they should come before 8:30.