Some verbs of cognition (e.g. ask 묻다/물어 보다 to ask, 알다/모르다 know/not know, 생각하다 think of/about, 기억하다 remember, 잊어 버리다 forget, 생각(이)나다/안 나다 just remembered/can't remember, 궁금하다 to be curious about/wonder) may be dealing with a proposition that is in question (that is, an interrogative complement).

In English, the interrogative complement is marked by 'if' or 'whether' when you deal with the question of 'yes or no,' or by a question word when it is about unknown information:

• I know/don't know if it will rain today.
• I don't remember ifSteve studied Korean.
• Have you thought of wheather you will study Korean or Japanese?
• Do you know when we have the oral final exam?
• I don't remember where I parked my car.
• I just remembered who will bring salad.

Verbs that take a question as its complement:

• 묻다/물어 보다 to ask
• 궁금하다 be curious about, I wonder
• 기억(못) 하다, 기억이 나다/안 나다 to remember/not remember
• 생각하다 to think
• 생각이 나다/안 나다 It occurs to me
• 알다/모르다 to know/not know

In Korean, 〜는/(으)ㄴ/(으)ㄹ지 is used in all interrogative complement, and along with the question word (누가/누구, 뭐, 언제, 어디, 왜, 어떻게) when dealing with unknown information.

• 졸업하고 나서 무슨 일을 할지 생각해 봤어요?
• 다음 학기에 한국어를 계속 들을지 생각해 봤어요?
• K102에서누가 AI였는지 생각나요?
• 다음 학기에 K301 누가 가르치는지 알아요?

What do you want your boyfriend/girlfriend to remember?

노영심 노래: 별걸 다 기억하는 남자 A man who remember even unusual things

Speaking Activities

1. Invite your partner to ask a question about the following items.

A:	. . .-에 대해서 궁금한 게 있으면 물어 보세요. Ask me if there is anything you are curious eabout . . .?
B:	저는 . . .~는/(으)ㄴ/(으)ㄹ지 궁금해요. I wonder . . .
A:	. . .

• 나 (취미, 전공, 고향, 좋아하는 노래/꽃/영화, since when . . . began to learn Korean, where . . . do hair, where . . . have lunch, etc.)
• IU
• Bloomington
• Each other's home place
• 2016 President election

2. . . .~는지/(으)ㄴ지/(으)ㄹ지 알아요/몰라요

• Who will teach K301 next semester
• What will happen in the Republican (공화당) Convention (전당대회) in June
• When Prof. Lee came to IU
• Where Ms. Cheon is going
• Why K-Pop/K-drama became popular

3. Ask your partner about the following: Have you thought of . . . ~는/(으)ㄴ/(으)ㄹ지 생각해 봤어요?

• What you want to do after graduation
• When you intend to go to Korea
• What to eat for lunch/dinner today
• How far away we are/How many days remain till the summer vacation
• What would be the best major to get a job
• Where you are going to/want to live after graduation
• If/Whether you like Korean

4. Do you remember . . . ~ 었/았는지 기억나세요?

• Where you lived when you were five
• Who your teacher was when you were a 1st grader
• What you liked doing when you were in middle school
• When you first met a Korean