ate就是过去式。

v. 吃（eat的过去式）He ate a substantial breakfast.

他吃了一顿丰盛的早餐。

He ate little， and drank less.

他吃得不多，喝得更少。

The men ate a hearty breakfast.

男士们吃了一顿丰盛的早餐。

The three men ate with relish.

那3个人吃得津津有味。

We ate lunch together every day.

我们每天一起吃午餐。