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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 Must not / Cannot / Not allowed

Core meaning - Must not / Cannot / Not allowed

Form - V + (으)면 안 돼; V + (으)면 안 돼요; V + (으)면 안 되다

Usage - Focus on the highlighted segment in each example; surrounding words can change while the pattern function stays the same.

Use this pattern for its grammatical function, not as a literal word-by-word translation.

See examples below for varied real-world usage.

-(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

여기서 뛰면 안 돼요

술을 마시면 안 돼요

거짓말하면 안 돼요

늦으면 안 돼요

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