SavingadollarSaving a dollar省下一美元Johnny: Papa, would you be glad if I saved a dollar for you ?Johnny：爸爸，如果我为你省下一美元，你高兴不?Papa : Naturally, my son.Papa：当然啦，孩子！Johnny: Well, I have saved one dollar for you. You said that if I brought a good mark this week, you would give me a dollar and I havent brought one.Johnny：那好，我省下一美元了。你说过我这个礼拜考出好成绩，就会给我一美元。我没考好！