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?