18．How Often Do the Buses Run
公共汽车多久一班

A: Excuse me, could you answer a few questions for me?
对不起，打扰一下，你能回答我几个问题吗？

B: Sure.
可以。

A: How often do the buses run?
　公共汽车多久一班?

B: They come by every fifteen or twenty minutes.
　每十五或二十分钟一班。

A: How late do they run?
　开到多晚?

B: Till around midnight, I think.
　我想半夜才收班。

A: How much is the fare?
　一张票多少钱?

B: A dollar.
一美元。

A: OK, thanks, you’ve really been a big help. I’m sorry to bother you.
好的，谢谢。你帮了我大忙。很抱歉打扰你。

额外成就感

till 直到；在……以前
* I’ll be here till 10 o’clock tomorrow.
我一直到明天10点都会在这里。
* My son often sits up surfing the internet till late at night.
我儿子常常上网到很晚才睡觉。