对不起； 打扰一下。
例句
1.Excuse me, but I must say you are completely wrong.
对不起，但是我必须说你完全错了。
2.Excuse me, have you get a light by any chance?
对不起，你碰巧有打火机吗？
3.Excuse me, how much is a postcard to France?
打扰一下，寄往法国的明信片多少钱一张？
4.Excuse me, would you tell me where I can get some butter?
打扰一下，您能告诉我黄油在哪儿卖吗？