Question 1

What is the function of -서 in 아파서?

Accepted Answer

The -서 ending is a connective (also called the reason or cause marker) that links two clauses. In 아파서, it means “because (it) hurts,” allowing you to follow up with the result or action you took.

Question 2

In 눈이 아파서, why is there an 이 after 눈?

Accepted Answer

The -이 is the subject particle. It marks 눈 (“eye/eyes”) as the subject of the verb 아프다 (“to hurt”). So 눈이 아파서 literally means “(my) eyes hurt, so …”

Question 3

What does 잠깐 mean, and what part of speech is it?

Accepted Answer

잠깐 means “for a moment” or “briefly.” It’s an adverb here, modifying the verb 쉬었어요 to tell us the duration of the rest.

Question 4

How is 쉬었어요 formed from the dictionary form 쉬다?

Accepted Answer

1. Start with the verb stem 쉬- (from 쉬다, “to rest”).  
2. Add the past marker -었- → 쉬었-.  
3. Add the polite ending -어요 → 쉬었어요 (“rested” / “took a break”).

Note: There’s no irregular change; the sequence 쉬 + 었 contracts naturally to 쉬었.

Question 5

Why isn’t there an explicit “I” (저 또는 나) in the sentence?

Accepted Answer

Korean often omits subjects when they’re clear from context. Here, “I” is understood because you’re talking about what you did—so you don’t need to say 저 or 나.

Question 6

Could you use a different connective, like -으니까, instead of -아서?

Accepted Answer

Yes. 눈이 아프니까 잠깐 쉬었어요 also means “Since/because my eyes hurt, I took a short break.”  
Difference in nuance:  
- -아서/어서 focuses on straightforward cause→result.  
- -으니까/니까 can feel slightly more explanatory or justificatory (often used when giving reasons or advice). Both are grammatically correct here.

nuni apaseo jamkkan swieosseoyo.

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