A lady lost her handbag. It was found by an honest little boy and returned to her. Looking in her purse, she commented, "Hmmm.... That's funny. When I lost my bag there was a $20 bill in it. Now there are twenty $1 bills."

一个女人丢了手提包，有一个诚实的小孩捡到后交还给了她。她看了看钱包，说：“嗯，这么有趣，我丢的时候里面是一张20美元，现在成了20张一美元。”

The boy quickly replied, "That's right, lady. The last time I found a lady's purse, she didn't have any change for a reward."

“没错，夫人。”小男孩立刻回答道，“上次我捡到钱包时，那位夫人没有零钱奖赏给我。”

change for  a reward

The boy worried that she would have no change to reward him！