主题句：Is he available? 他有空吗？
SCENE 1
Guest: Is your boss available? 你们老板有空吗？
Secretary: I'm sorry. I'm afraid he's in the conference. You might have to wait for a while. 对不起，他在开会，你们等等吧。
SCENE 2
Victor: Is Mr. Li available? 李先生现在有空吗？
Secretary: I'm sorry. He's on the other line, please call him late. 对不起，他正在打电话，待会再打过来吧。
SCENE 3
A: Are you available on Friday evening? 星期五晚上你有空吗？
B: Yes, I'm available. 我有空。
A: Let's go bowling. 我们去打保龄球吧。
SCENE 4
A: I want to talk to Tim. Is he available? 我想和Tim谈谈，他有空吗？
B: I'm afraid he went out for a swim. 恐怕他出去游泳了。
