既是可数名词,又是
不可数名词。有这样的词,某种情况可以用作可数,某种情况下不可数。
have some cake 表示这种物质,东西,不可数
还有 a piece of cake, 也是这种情况。
I need to buy a cake for my son, for it is his birthday today.可数
A cake is a sweet food made by baking a mixture of flour, eggs, sugar, and fat in an oven. 可数
Cakes may be large and cut into slices or small and intended for one person only。可数,而且有复数。