안녕하세요?

" 수업이 끝난 후에 저녁 먹었습니다 " 무슨 뜻일까요?

감사합니다.

Can you please help me translate this sentence and see if there are any grammar mistakes? Thanks.
麻烦帮忙翻译一下这句话，多谢您！

Question

안녕하세요?

" 수업이 끝난 후에 저녁 먹었습니다 " 무슨 뜻일까요?

감사합니다.

Can you please help me translate this sentence and see if there are any grammar mistakes? Thanks. 
麻烦帮忙翻译一下这句话，多谢您！

Answer

수업이 끝난 후에 저녁(을) 먹었습니다.

I had dinner after class (is over).

1)
* After + Noun : ~ 후에
* After + Verb : ~ㄴ(은) 후에
; final consonant + 은 후에 = 먹은 후에
; vowel + ㄴ 후에 = 끝난 후에

끝나다 : to finish, be over
먹다 : to eat, to have (meal)

2)formal past tense 
: verb/ adjective (past) +습니다.
Ex) 먹다 - 먹었다(past) = 먹었습니다.
Ex) 끝나다 - 끝났다(past) = 끝났습니다.

저녁 : dinner, supper, evening

3) object 을/를 
ENG: To have(verb) + dinner(object) 
KOR: 저녁(을) + 먹다(V.)

💪

Answer

“I had dinner after class.”

This means that you are dinner after class. The past tense verb “had” is used because you are describing something that happened earlier.