1.表示吃早餐
He seldom eat breakfast. 他很少吃早餐。
We breakfasted early. 我们早餐吃的很早。
We were having breakfast. 我们正在吃早餐
2.表示一日三餐
Breakfast is served until 9 a.m. 早餐供应到上午9点。
Can you manage lunch on Tuesday? 你周二能来吃午饭吗?
I'm honored if you'd like to have dinner with me. 如果你能陪我共进晚餐,我将不胜感激。