经典句型:How much should I pay? 我该付多少钱? A:How much should I pay? 甲:我该付多少钱? B:25 yuan. 乙:25元。 A:Here you are. 甲:给你。 B:Here is the change. 乙:这是找给您的钱。 经典句型:Please give me the inovice....