Let's learn about "그럴 줄 알았어"

(내) 그럴 줄 알았어 : That figures / [=이미 그렇게 될 줄 알았어] I already knew that would happen / I knew it

[other expressions]

- (내) 그럴 줄 알았다. (to younger people or friends)

- (내) 그럴 줄 알았네. (to younger people or friends)

- (내) 그럴 줄 알았어. (to younger people or friends)

- (전) 그럴 줄 알았네요. (honourific by ‘-요’)

- (전) 그럴 줄 알았어요. (honourific by ‘-요’)

- (전) 그럴 줄 알았습니다. (formal; more honourific by ‘-스’)

[explanations]

* 내 : I (non-honourific word)

* -가 : a subject particle after a word ends in a vowel; this omittable

* 전 : a short form of 저는

* 저 : I (honourific word)

* -는 : a subject particle after a word ends in a consonant; this omittable

* 그러다 / 그러하다 : be such

* 그럴 : 그러(the stem of 그러다) + -ㄹ(a suffix makes a verb future tense and attributive)

* 주다 : (1) give (2) plan in the sentence

* 줄 : 주(the stem of 주다) + -ㄹ(a suffix makes a verb future tense and attributive)

* 알다 : know; understand

* 알았다 : past tense of 알다 by '-았-'

* ㄹ 줄 알다 / -을 줄 알다 / -를 줄 알다 : this phrase means (1) "I know how to do it" (2) "I am able to do it" (3) "I think that ~; I make out ~"

* 알았습니다 : 알았(the stem of 알았다) + -스(a suffix makes a verb more honourific) + -ㅂ니다(an honourific descriptive verb ending suffix by ‘-ㅂ’)

* a verb + -다 / -네 / -어 : a non-honourific descriptive verb ending suffix

* a verb + -네 / -어 + -요 : an honourific verb ending suffix

* a verb + -습니다 / -ㅂ니다 : an honourific descriptive verb ending suffix by ‘스’ / ‘-ㅂ’