Have you ate?
Have you eaten?
Why is there a differance?
The tense is present perfect wich is built by a present tense form of have and the past participle of the full-verb - here "eaten" (from eat).
"ate" is the simple past tense form of "eat".
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'I saw that yesterday'. 'I saw a movie a day ago.'
I know that here is a difference between American and British English, as "family" is understood either as a collective noun, seen as 'ONE group', so verbs and possessive pronouns occur in singular:
"My family is spending ITS vacation in the east."
Or "Family" can also be seen as a group with 'SEVERAL members', then verbs and possessive pronouns occur in plural:
"My family is spending THEIR vacation in the east."
I do not know at the moment, which "English" prefers what way of saying it, but this could maybe have been your 'mistake'?!