星期天有去波士顿的航班吗？
Are there any planes to Boston on Sunday?


你可能会听到的回答，
Yes, there are two planes to Boston on Sunday. （有的，星期日有两班到波士顿的航班）
One in the morning and the other one is in the afternoon. （一班在早上，另一班在下午）
Which one would you like to book? （你要订哪一班？）