This is the 482nd most frequent Vietnamese word.
việc
"Việc" means "work," "task," or "job" in English.
In this sentence, 'Việc' is used to nominalize the verb phrase 'học hành' into the noun phrase 'Việc học hành', emphasizing the concept or act of studying.
Việc học hành là rất quan trọng.
Learning is very important.
Here, 'Việc' introduces the subject, 'tôi làm sai,' as a nominalized clause, referring to the specific act of me doing wrong.
Việc tôi làm sai khiến tôi cảm thấy hối hận.
The fact that I did wrong makes me feel regret.
In this context, 'việc' refers to work or tasks generically, emphasizing the importance of completing the tasks at hand.