范例对话

A: Hey, John. I'm bored. Come on, let's go out and do something.

B: Sorry, I'm right in the middle of studying for a physics exam. I won't be able to make it tonight.

A: You've been studying for a long time. Why don't you take a break? Come on! Let's go! Forget studying for a while!

B: Look! Get off my back!I can't go anywhere!

A: OK. I'll stop bothering you only if you promise to let me know the minute you're finished.