这就是我们一家人的一日三餐用英语怎么说

"Three meals a day" 就是指一天三餐，分别是早餐、午餐和晚餐。这个说法起源于西方文化，通常在早上、中午和晚上进餐。

例句：

"I always make sure to eat all three meals a day to stay healthy."（我总是确保每天吃三餐来保持健康。）
"My schedule is so busy, I often miss one of the three meals a day."（我的日程安排太忙了，经常会错过一餐。）
"I try to eat a balanced diet by having a variety of foods in my three meals a day."（我试着通过每天三餐中吃各种食物来保持均衡的饮食。）