eeokeoneul kyeon chaero jamdeureosseoyo.

I fell asleep with the air conditioner on.

Breakdown of eeokeoneul kyeon chaero jamdeureosseoyo.

• ~을: object particle
• 잠들다: to fall asleep
• 켜다: to turn on
• 에어컨: air conditioner

Questions & Answers about eeokeoneul kyeon chaero jamdeureosseoyo.

What does -ㄴ 채로 mean in this sentence?

-ㄴ/은 채로 means while remaining in that state or with something left as it is.

So 에어컨을 켠 채로 means with the air conditioner left on.

In this sentence, the idea is:

• first, the speaker turned the air conditioner on
• then, without changing that state, the speaker fell asleep

It is very similar to English expressions like:

• with the air conditioner on
• while leaving the air conditioner on

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Why is it 켠 and not 켜는?

Because 켠 is the adnominal form that shows a completed action resulting in a current state.

The base verb is 켜다 (to turn on).

Here is the difference:

• 켜는 = turning on / present-type modifier
• 켠 = turned on / already on

Since the air conditioner was already on at the time the speaker fell asleep, 켠 채로 is the natural form.

So:

• 에어컨을 켜는 채로 would sound wrong or unnatural here
• 에어컨을 켠 채로 = with the air conditioner turned on

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Why is there an object marker 을 in 에어컨을?