你吃饭了吗?用英文怎么说

done with your lunch? you done with your lunch? are you done with your lunch? 都可以。
也可以说：had lunch? had your lunch? have you had your lunch? 用take也可以，have you taken lunch?
英文中的午饭、晚饭、早饭分得很清楚，口语中不能用meal一以概之。Meal只在“一日几顿饭”的上下文才用，比如某地人很穷，每天才吃两顿饭，就用meal。

英语是：Have
you
eaten
yet?
句子解释：
eaten
英[ˈi:tn]
美[ˈitn]
v.
吃，喝，吃饭(
eat的过去分词
);
（食物）
吃起来感到;
咬;
（人）感到苦恼（或烦恼）
;
[例句]This
tree
has
been
eaten
hollow
by
worms.
这棵树被虫子蛀空了。
yet
英[jet]
美[jɛt]
adv.
还;
但是;
已经;
又，再;
conj.
然而，但是;
[例句]They
haven't
finished
yet
他们还没有完成。

Have you had dinner?

你吃饭了吗？是华人文化中问候他人的经典用法，但面对外囯人包括西方人绝不可这样问候。
你吃饭了吗？＝你好吗？英文说：How
are
you?
How
are
you
doing?

Have you had a meal？