Have you got a minute? 能耽误你一点时间吗?

Have you got a pen I could borrow? 有笔借我吗?

Really? 真的吗?
Are you sure? 你确定吗?

Why not? 为什么不?

What's going on?/What's happening? 发生什么事了?

Could I have your attention, please? 请注意。

Let's go! 走吧!
Hurry up! 赶快!
Get a move on! 赶快走!

Calm down! 冷静!
Steady on! 镇定点!

Hang on a second/hang on a minute. 稍等。
One moment, please. 请等一下。
Just a minute. 等一下。
Take your time. 慢慢来。

Please be quiet! 请安静!
Shut up! 闭嘴!
Stop it! 住手!

Don't worry. 别担心。
Don't forget. 别忘了。

Help yourself. 别客气。
Go ahead. 继续。
Let me know! 告诉我。

After you! 你先请。(如果进门时你想让其他人先走,就可以说这句话)