我已经吃好了英文怎么说

"I have already eaten" 可以说成 "I have already had my meal"。这是一个常用的英语表达，表示已经进餐了。

来源：这是一个简单的英语表达，"eaten" 是动词 "eat" 的过去分词形式，"have" 是助动词，它的作用是强调动作已经发生。

例句：

I have already eaten, so I don't want to order anything else. (我已经吃过了，所以我不想再点其它东西了。)
I have already had my breakfast, so I'm not hungry. (我已经吃过早饭了，所以我不饿。)
I have already eaten, so I can't eat anymore. (我已经吃饱了，所以我不能再吃了。)