Breakdown of oneureun gichimi simhago kosmuldo naseo byeongwone garyeogo hae.
Questions & Answers about oneureun gichimi simhago kosmuldo naseo byeongwone garyeogo hae.
은 marks 오늘 as the topic.
So 오늘은 gives a sense like:
- As for today
- Today, at least
- Speaking of today
In many cases, 오늘 by itself would also be possible, but 오늘은 can sound a little more natural when the speaker is setting today apart from other days. It can subtly imply something like today is different or today, in particular, I’m not feeling well.
Because 심하다 describes the cough as being severe, and in Korean that noun is marked as the subject of the descriptive verb.
So:
- 기침이 심하다 = the cough is severe
A learner might expect an object marker, but 심하다 works more like to be severe, not to severely do something.
So:
- 기침을 심하다 ❌
- 기침이 심하다 ✅