milk是不是可数名词

I hope you haven't used all the milk.

希望你没有把牛奶都用掉了。

A skin had formed on the top of the milk.

奶上结了一层奶皮。

Would you like milk or cream in your coffee?

你的`咖啡里要牛奶还是奶油？

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？