Object marking particles
Object marking particles create a relation to the verb in the sentence. when sentences become longer, there are more elements, the word order can change, and the object or subject gets further away from the verb. Using a particle is absolutely necessary in this situation to clarify the meaning.
Wallet
지갑
Room
방
Did you eat an apple?
사과를 먹었어요?
Are you buying an apple?
사과를 사요?
To fall
The apple fell
떨어지다
사과가 떨어졌어요
Who did you meet here yesterday ?
어제 누구를 여기에서 만났어요?
Do you watch TV often?
텔레비전을 자주 봐요?
Week
How many times a week do you watch TV?
이주일
텔레비전을 일주일에 몇 번 봐요?
How many time
몇 번
To Lose
I have lost my cell phone.
잃어버리다
핸드폰을 잃어버렸어요
I am not sure
잘 모르겠어요.