当cake表示“糕饼”、“蛋糕”等，视为物质名词，不可数；但若指一个完整的蛋糕或指切成一块块的蛋糕，则可数。
相关介绍
I'm afraid this cake has turned out very dry.
恐怕这个蛋糕烤得太干。
He cut himself a great thick slice of cake.
他给自己切了厚厚的一大片蛋糕。
I cut a piece of birthday cake for them all.
我给他们每个人都切了一块生日蛋糕。
当cake表示“糕饼”、“蛋糕”等，视为物质名词，不可数；但若指一个完整的蛋糕或指切成一块块的蛋糕，则可数。
I'm afraid this cake has turned out very dry.
恐怕这个蛋糕烤得太干。
He cut himself a great thick slice of cake.
他给自己切了厚厚的一大片蛋糕。
I cut a piece of birthday cake for them all.
我给他们每个人都切了一块生日蛋糕。
