묻는 사람 by itself can mean either 내가 묻는 사람(사람 as the object) or 내게 묻는 사람 (subject). Depending on the context, you can translated it as "a person who asks", "a person that I ask", or "a person to ask". "a person to ask" in English has a similar situation where "person" can be the subject or object of "to ask". In actual usage, the surrounding context usually makes clear what is meant: 1. 내 친구에게 [춤을 가르치는 사람] (the person who teaches my friend dancing) 2. 내가 [춤을 가르치는 사람] (the person I teach dancing) 3. 내 친구에게 춤을 가르칠 사람 (the one to teach my friend dancing = the one who WILL teach my friend dancing) 4. 내가 춤을 가르칠 사람 (the one for me to teach dancing = the one I WILL teach dancing) Although "춤을 가르치는 사람" may be interpreted two ways, "내 친구에게" and "내가" make the sentences clear. Also note the tense difference between 가르치는 and 가르칠. An example of an ambiguous sentence: - 그가 첫 번째로 물어본 사람이었다. 1. 그가 내가 첫 번째로 물어본 사람이었다 (He was the first person I asked). 2. 그가 내게 첫 번째로 물어본 사람이었다 (He was the first person who asked me). Such an ambiguity is relatively rare and can be easily avoided by changing things around slightly. In English, "to ask" is tense neutral in itself, and follows the tense in the main clause. Korean on the other hand only has tense-specific verb endings: 물어보는(present), 물어본(past), and 물어볼(future). Another example. 1. 많은 것을 아는 사람. (a person who knows a lot - "person" is the subject) 2. 많은 일로 아는 사람. (a person I know from a lot of dealings - "person" is probably the object) #1 is clear because 것을 can only be an object of 아는 사람. #2 is not as clear but most people would interpret it as 내가 많은 일로 아는 사람. So the important thing is to know how the bigger phrases and sentences are constructed, not the isolated fragment. I suggest you read and practice with good, full sentence examples rather than concentrating on such short phrases. If you have real sentences that confuse you, may be you can ask again with those examples.