Question

1.Have you had your dinner?
2.Did you have your dinner?

They do look the same(for me).

★Could anyone here explain it to me?
★also tell which tense we'll consider in statement 1?
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Answer 1

Answer:

Your sentence 1. ( Have you had your dinner ? ) is in present perfect tense . Here ( have ) is an auxiliary verbs. ( Had ) is v3.

It is used to express just completed actions. It inquiries whether ( you ) have just taken your dinner.

Your sentence 2. ( Had you have your dinner ? ) is wrong. There is no tense with ( had + v1 ) . But you can write ( Had you had your dinner? ) Then it will be in past perfect tense. Here