星级典句：

第一句：At what time does the first bus start in the morning?
这路车早上第一趟几点发车？

A: Excuse me, is this No. 312 bus?
打扰一下，这是312路公交车吗？
B: Yes. What can I do for you?
是的。能为您做点什么吗？
A: At what time does the first bus start in the morning?
这路车早上第一趟几点发车？
B: 7: 30.
七点半。

第二句：The conductor told me the last one would arrive here at 22:05.
售票员告诉我说最后一辆车晚上十点零五到这儿。

A: How about talking a taix? It's 22:00. I guess there's no bus now.
打车吧？都晚上十点了，我想现在没有公交车了。
B: The conductor told me the last one would arrive here at 22:05.
售票员告诉我说最后一辆车晚上十点零五到这儿。
A: OK. Five minutes more.
好吧。再等五分钟。

在询问别人是否需要帮助时可以说：

What can I do for you? Is there anything that I can do for you? Can I help you?