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Structure

Formal

V + (으)면 안 돼요

Informal

V + (으)면 안 돼

Plain

V + (으)면 안 되다

-(으)면 안 되다 expresses prohibition - "must not" or "not allowed."

여기서담배피우면안돼요

You must not smoke here.

For rules, warnings, and prohibitions. Softer than direct commands.

-(으)면 안 되다 vs -지 말다

- 면 안 되다 = rule/prohibition

- 지 말다 = direct command

Consonant + 으면, vowel + 면

- 먹으면 안 돼요

- 가면 안 돼요

돼요 is contracted 되어요

여기서뛰면안돼요

술을마시면안돼요

거짓말하면안돼요

늦으면안돼요

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