저녁 식사는 했니? (Have you had dinner?, Did you have dinner?)
아직 안 먹었어 (I haven't my dinner.)

I'm sorry for not understanding the 'Past tense' ^^

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

(Have you had dinner?, Did you have dinner?) - Question: Have you had your dinner?(present perfect tense)  / Did you have your dinner? (simple past tense)

(I haven't my dinner.) Answer: I haven't had my dinner. (present perfect tense) / I did not have my dinner. (simple past tense)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

NOTE:

Red - Better word/Expression

Blue - Additional word

Green - Spelling/Punctuation/Capitalization

Yellow - Sentence structure

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Hello, Jun! Thank you for the message. Do not worry about it. It was unfortunate that the class time was almost over so I could not explain more about the past tense. Just please review more about this tense since you always miss them in your sentences. Good night!

Teacher Ara