［正］

A silver cup was given to the winner.

［误］ My mother was looking for the whisky cup.

［正］

My mother was looking for the whisky glass.

［析］ glass一般指由玻璃制成的器皿，而cup多指用陶瓷或金属制成的杯子，且cup尤其用在奖杯上。喝酒多用的是玻璃制成的杯子，如我们讲I drink a glass of wine at supper. 而不讲I drink a cup of wine at supper.