cake的用法以及是two pieces of cakes还是two pieces of cake,some cake还

cake的用法以及是two pieces of cakes还是two pieces of cake,some cake还 two pieces of cake 还是 two pieces of cakes?cake 到底可不可数 two pieces of cake的中文 为什么two pieces of cake 中的cake不加s? two pieces of cake 用 is 还是 are why does Susan want to eat two pieces of cake? two pieces of ckae 还是two pieces of cakes two bags of ( ) A.cake B.cakes You can cut the cake ------ two pieces five pieces of cake /five pieces of cakes哪个才对? pieces of cake?and pieces of cakes 有什么不同?and basket可以用piece some pieces of cake要不要加s