-으십시오

V+(으)십시오 This indicates that the sentence is an imperative and formal. This form commonly appears on public facility signs and in official announcements. Here, 'formal' refers to official speaking contexts rather than showing respect to elders. (Because giving direct suggestions to elders can be considered rude, even when using formal language.)

조심하십시오.

Please be careful.

안전벨트를 매십시오.

Please fasten your seatbelt.

잠깐만 기다리십시오.

Please wait a moment.

• Do not~ : ~지 마십시오

여기에 주차하지 마십시오.

Don’t park here.

문 가까이 서지 마십시오.

Don’t stand close to the door.

• Since it is a imperative sentence, it cannot express tense.