jinryoga kkeutnago naseo yakgugeseo yageul sayo.

object particle

Breakdown of jinryoga kkeutnago naseo yakgugeseo yageul sayo.

• ~에서: location particle
• 사다: to buy
• ~가: subject particle

Questions & Answers about jinryoga kkeutnago naseo yakgugeseo yageul sayo.

What does 진료 mean here? Is it the same as 치료?

Not exactly.

• 진료 = medical examination / consultation / seeing a doctor
• 치료 = treatment / medical treatment

So in this sentence, 진료가 끝나고 나서 usually means after the doctor’s appointment/exam is over, not necessarily after all treatment is finished.

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Why is it 진료가 끝나고 나서 and not 진료를 끝나고 나서?

Because 끝나다 is an intransitive verb, meaning to end / be finished.

That means the thing that ends is marked as the subject, so you use 가/이:

• 진료가 끝나다 = the appointment ends

If you wanted a transitive version, Korean has 끝내다, meaning to finish something:

• 진료를 끝내다 = to finish the appointment
  but this sounds more like someone actively finishes it

In your sentence, the natural idea is simply the appointment ends, so 진료가 is correct.

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What does -고 나서 mean?

-고 나서 means after doing..., with a clear sense that the first action happens first, and then the next action happens afterward.

So:

• 끝나고 나서 = after it ends
• 진료가 끝나고 나서 약국에서 약을 사요 = After the appointment ends, I buy medicine at the pharmacy

This pattern is very common for sequencing actions.

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