Breakdown of oneul ane bogoseoreul kkeutnaeya haeyo.
~를~reul
object particle
오늘oneul
today
~어야 하다~eoya hada
to have to
안에ane
within
Questions & Answers about oneul ane bogoseoreul kkeutnaeya haeyo.
What does 오늘 안에 mean exactly, and how is it different from 오늘까지?
오늘 안에 means within today—i.e., at some point before the day ends (before midnight in most contexts). It emphasizes the time window.
- 오늘 안에 끝내야 해요 = You must finish it sometime during today.
오늘까지 means by today (as a deadline) and often implies no later than today (today is the last acceptable day). It emphasizes the deadline.
- 오늘까지 끝내야 해요 = You must finish it by today (today is the cutoff).
They’re often similar in real life, but 안에 feels more like “within the bounds of,” and 까지 feels more like “up to / until (deadline).”
Why is there no object particle like 를/을 after 보고서?
Korean often drops particles when the meaning is clear, especially in casual or neutral speech. The full form could be:
- 오늘 안에 보고서를 끝내야 해요.
But 보고서를 → 보고서 is a common omission. Keeping 를 can sound a bit more explicit/clear or slightly more formal, but both are natural.
What does -아/어야 해요 mean, and how strong is it?