吃早餐用英文怎么说过去式

"Had breakfast"是过去式的表达方式，它的来源是英语的过去完成时形式，表示动作已经完成，且具有明确的过去时间。

例句：

I had breakfast at 7 o'clock this morning.
(我今天早上7点吃了早餐)
She had breakfast before she went to work.
(她上班前吃了早餐)
They had breakfast together every Saturday.
(他们每个星期六一起吃早餐)