Let's learn about “-은지”, “-는지”, “-ㄴ지”, “인지” suffix

1) 막연한 의문을 나타내는 연결형 또는 종결형 서술격 조사. A connected or ending suffix expresses vague questions

(1) “-ㄴ지” suffix

모음으로 끝난 체언에 붙음 : This is attached to last vowel of a word. this is a short form of “-인지”

【예(ex)】 내가 누군지 알겠니 ? : Do you know who am i ?

(2) “-인지” : This is attached to any last letter of a word

【예(ex)】 내가 누구인지 알겠니 ? : Do you know who am i ?

2) 막연한 의문을 나타내는 해체의 연결 어미 또는 종결 어미 : A imperative connected or ending suffix expresses vague questions

(1) “-ㄴ지” suffix

모음이나 ‘ㄹ’로 끝난 형용사 어간 또는 높임의 ‘-시-’에 붙음 : This is attached to the root stem of an adjective or ‘-시-‘ shows honourific attitude

【예(ex)】 안에 계신지 모르겠다 : I don't know if you're in there

(2) “-는지” suffix

동사 어간이나 형용사 ‘있다’·‘없다’·‘계시다’의 어간 또는 높임의 ‘-시-’나 시제의 ‘-았(었)-’·‘-겠-’ 등에 붙음 : This is attched to the root stem of a verb. and This is attached to the root stem of an adjextive like “있다”(exist), “없다”(not exist), “계시다”(there is a elder person in some place). Also this is attached to “-시-“(a suffix makes a verb honourific) or “-았/었-“(a suffix makes a verb past tense) or “-겠-“(a suffix shows a guess)

【예(ex)】 얼마나 남았는지 모르겠다 : I don't know how long something/somebody have left

지금은 어디 사는지 ? : Where do you live now ?

(3) “-은지” suffix

‘ㄹ’ 이외의 자음으로 끝난 형용사 어간에 붙음 : This is attached to the root stem of an adjective after last consonant doesn’t end “ㄹ”

【예(ex)】 산이 어떻게나 높은지 ! : How high the mountains are !