吃东西很厉害，可以用英语表达为 'a great eater' 或者 'an impressive eater'。下面是一个用这些词汇写的例子：

When it comes to eating, John is a great eater. He can finish a whole pizza by himself and still have room for dessert. His friends are always impressed by his ability to eat so much without getting full. In fact, they often challenge him to eating contests just to see how much he can eat. John loves the attention and never backs down from a challenge. He truly is an impressive eater.