-(으)면 안 되다 Negative Obligation
August 22, 2009 by tailieutienghan
This grammatical construction expresses negative obligation in Korean. It is used with all verbs (both action and descriptive) to express what one must not do or must not be. It is a combination of the conditional (면), the negative adverb (안), and the verb to become (되다). This grammatical structure can be translated as “if (someone) doesn't (verb), it can't be” – or more simply: “must not (verb).”
The final verb 되다 (doeda) can often be replaced with the verb 하다 (hada) as the final verb and still hold the same exact meaning.
The tense and politeness level is regularly expressed in the verb 되다 (doeda)/하다 (hada). Negation, however, is regularly expressed in the first verb.
Verb Stem + (으)면 안 되다
(으) is used with verb stems that end in consonants.
Example: 읽다 (to read)
읽 (ilk) – verb stem
읽 + 으면 안 되다
읽으면 안 되다 (ilgeumyeon an doeda) – You must not read it. (If you read it, it can't be.)
1.당신이 떠나면 안 돼요! (dangsin-i tteonamyeon an dwaeyo!)
You must not leave! (If you leave, it can't be!)
2.그 사람을 만나면 안 돼요. (geu saram-eul mannamyeon an dwaeyo.)
You must not meet that person. (If you meet that person, it can't be.)
3.그 화장실 쓰면 안 돼. (geu hwajangsil sseumyeon an dwae.)
You must not use that bathroom. (If you use that bathroom, it can't be.)
The final verb -되다 (-doeda) cannot inflect the past tense. Instead the past tense must be inflected using the verb 하다 (hada) – in place of 되다 (doeda).
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