11. What can I do for you? 我能为你做点什么?
12. What’s wrong with you? (What’s the matter?)你怎么了?(出什么事了?)
13. It’s time for class. 该上课了。
14. Come in please. 请进。
15. Let’s get ready for class! 让我们准备上课吧!
16. Line up please! 排队!
17. Attention please! 立正!
18. At ease. 稍息。
19. Turn left/right! 向左/右转!
20. One by one please, no pushing. 一个一个来,不要挤。