一杯牛奶是可数名词，但是单独牛奶milk就是不可数名词。
milk的第三人称单数： milks现在分词： milking过去式： milked过去分词： milked
We took the milk run back home.
我们回家途中多次停留。
If you have any spare milk, could you give me a little?
你要是有多余的牛奶，给我一些好吗？
Some children develop a sensitivity to cow's milk.
有的孩子对牛奶过敏。
Could I have a drop more milk in my coffee, please?
给我在咖啡里多加点牛奶好吗？
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