I like cakes我喜欢蛋糕。

I like…我喜欢…，cake蛋糕，可数名词。它的复数形式是cakes。

英语中此类句型中后接可数名词都要用复数形式，表示一类。例如:

I like books， I like reading books.

I like bananas， I like eating bananas.

I like boys， I like playing with boys.