crowd
［误］ The room soon was crowded by people.
［正］ The room soon was crowded with people.
［析］ crowded在这句话中应作为形容词，所以这句话不是被动语态而是系表结构，如：The room was crowded with books.
cup
［误］ A silver glass was given to the winner.
［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.
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