meal

这组词均为餐名,一般不加冠词。它们的区别是：

dinner指正餐,多在晚上吃,也可指宴会; breakfast指早餐; lunch指午餐; meal指任何一餐; supper指晚餐; tea在英国,指下午茶。例如:

He asked me to dinner tonight.他邀请我今天晚上吃饭。

The dinner we had was excellent.我们吃的晚餐很丰盛。

I hope you will honour us with your presence at the dinner.我希望您能光临此次晚宴。

I have breakfast at seven.我在7点吃早餐。

We have lunch at noon.我们在中午吃午饭。

He had a light meal at home.他在家吃了顿便餐。

I have supper at six.我6点吃晚饭。

They are having tea in the garden.他们正在园子里喝下午茶。

这三个词共同的意思是“餐”。它们的区别是：

meal意为“一餐,进餐,饭菜”,是普通用语; repast通常指“盛餐”,一般用在正式文体中,日常英语中用得极少。例如:

The guest partook of a luxurious repast in the beautiful hall.这位客人在这美丽的大厅里享受了一顿奢侈的盛宴。

diet通常指特定的饮食、食物、习惯食用品。例如:

You'd better have a light diet.你最好吃清淡的食物。

这两个名词都有“餐”之意。

dinner正餐。指一日中的主餐，可中午吃，也可晚间吃。

meal泛指一日三餐的任一餐，也可指一餐所吃的东西。