A friend and I were standing in line at a fast-food restaurant, waiting to place our order.
我和一个朋友在一家快餐店里排队点餐。

There was a big sign posted. "No bills larger than $20 will be accepted."
店里有这样一个标语：“本店谢绝面值20元以上钞票。”

The woman in front of us, pointing to the sign, remarked, "Believe me, if I HAD a bill larger than $20, I wouldn't be eating here."
站在我们前面的女人，指着标语，说道：“相信我，如果我真的有一张20元以上的钞票，我就不在这吃了。”