Pattern: -(아/어)야
-(아/어)야 (-(a, (a, eo)ya)
-(아/어)야 expresses necessity or obligation in Korean. It's common in daily and formal speech.
When and how native speakers actually use it.
Expresses necessity or obligation to do something
When to use
Expressing necessity, Stating obligation, Giving advice or recommendations
The nuance
Attach '-아야' or '-어야' to the verb stem depending on the vowel harmony rules: use '-아야' if the last vowel is ㅏ or ㅗ, otherwise '-어야'. It expresses that an action must or should be done.
공부해야 시험에 합격할 수 있어.
gong-bu-hae-ya si-heom-e hap-gyeok-hal su iss-eo., gong bu hae ya si heom e hap gyeok hal su iss eo.
'-해야' attaches to '공부하다' to clearly express obligation.
일찍 자야 내일 피곤하지 않아.
il-jjik ja-ya nae-il pi-gon-ha-ji an-a., il jjik ja ya nae il pi gon ha ji an a.
'-자야' attaches to '자다' to express condition and necessity.
음식을 먹어야 건강하다.
eum-sik-eul meok-eo-ya geon-gang-ha-da., eum sik eul meok eo ya geon gang ha da.
'-어야' attaches to '먹다' expressing a condition for health.
내일 회의에 참석해야 해요.
nae-il hoe-ui-e cham-seok-hae-ya hae-yo., nae il hoe ui e cham seok hae ya hae yo.
'-해야' attaches to '참석하다' to indicate obligation.
운동해야 몸이 좋아져요.
un-dong-hae-ya mom-i joh-a-jyeo-yo., un dong hae ya mom i joh a jyeo yo.
'-해야' attaches to '운동하다' to express necessity.
책을 읽어야 지식이 늘어요.
chaek-eul ik-eo-ya ji-sik-i neul-eo-yo., chaek eul ik eo ya ji sik i neul eo yo.
'-어야' attaches to '읽다' to show an essential condition.
시험 준비 안 해야 돼요.
si-heom jun-bi an hae-ya dwae-yo., si heom jun bi an hae ya dwae yo.
Negative obligation requires '-지 말아야 해요', so this is incorrect.
밥 먹어야야 해요.
bap meok-eo-ya-ya hae-yo., bap meok eo ya ya hae yo.
'-어야야' is a redundant form and incorrect.
Which sentence correctly uses -(아/어)야?
Find the mistake in: '내일 일찍 일어나야야 해요.'
What meaning does -(아/어)야 express?
