1 May i come in?
我能进来吗？
2 It's time for class.
上课时间到了
3 Open your book and turn to page twenty.
打开书，翻到第20页。
4 I'll call the roll before class.
课前我要点名。
5 Has everybody got a sheet?
每个人都拿到材料了吗？
6 Any different opinion?
有不同意见吗？
7 Are you with me?
你们跟上我讲的了吗？
8 Have I made myself clear?
我讲明白了吗？
