~(으)면 안 되다

V-(으)면 안 되다 means "may not, not allowed" ~which express prohibition or limitation of an action which represents social conventions or common sense (can also means "may not, to be not allowed") - Double negative form -지 않으면 안 되다 can be used to emphasize that a particular action must be performed. USAGE : Words ending in vowel or ㄹ + -면 안 되다: 가다 -- 가면 안 되다 보다 -- 보면 안 되다 운동하다 -- 운동하면 안 되다 쓰다 -- 쓰면 안 되다 Words ending in consonant + -으면 안 되다: 앉다 -- 앉으면 안 되다 받다 -- 받으면 안 되다 *듣다 -- 들으면 안 되다 *붓다 -- 부으면 안 되다 AV~(으)면 안 되다 express not only prohibition but also can be used as questions, ie: A. AV~(으)면 안 되다 is used in asking questions in the POSITIVE approach, such as examples : 1. 이렇게 하면 안 돼요 = Can’t you do it like this?or Is it okay if you do is like this? 2. 더 빨리 하면 안 돼요? = Can’t you do it faster? or Is it okay if you do it faster? B. AV~(으)면 안 되다 is used in asking questions in NEGATIVE approach, such as examples: 1.이렇게 안 하면 안돼? Can you not do it like this? or Is it okay if you don't do it like this? 2. 밥을 지금 암 먹으면 안돼? Can we not eat now? or Is it okay if we don't eat now? C. AV~(으)면 안 되다 is also used to ask politely for something to be done.Usually adding 아/어 주다, such as : 1. 오빠, 아이스크림을 사주면 안돼? Oppa, can you buy me ice cream? 2. 오빠 지금 시간을 조금더 주면 안돼? Oppa, can you give me more time?