Usages of mos
나는 수영을 못 해.naneun suyeongeul mos hae.
I cannot swim.
비밀번호를 잘못 입력하는 바람에 배송 기사가 못 들어왔습니다.bimilbeonhoreul jalmos ipryeokhaneun barame baesong gisaga mos deureowassseupnida.
Entering the password incorrectly meant the delivery driver could not get in.
운송장이 젖는 바람에 운송장 번호를 확인하지 못했습니다.unsongjangi jeotneun barame unsongjang beonhoreul hwaginhaji moshaessseupnida.
The waybill got wet, so I could not check the waybill number.
오늘은 운이 없어서 입장권을 못 샀어.oneureun uni eobseoseo ipjanggwoneul mos sasseo.
I had no luck today, so I could not buy an admission ticket.
밤에 고통 때문에 못 잤어.bame gotong ttaemune mos jasseo.
I could not sleep at night because of the pain.
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“How do speech levels work in Korean?”
Korean has multiple speech levels that indicate formality and politeness. The most common are the formal polite (‑습니다/‑ㅂ니다), informal polite (‑아요/‑어요), and casual (‑아/‑어) forms. Which level you use depends on who you're speaking to and the social context.
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