Today, you are going to learn how to use “While” in Korean, the grammar pattern is “V.S. + (으) 면서.” Remember this is the same person does both action.  For instance, “I watched a TV program while I was on the phone” is good, but  you can’t say “I watched a TV program while she was on the phone.”  “V.S. + (으) 면서” is for the same person does both action, you can’t add another person in a senctence.   Please read examples how to use “V.S. + (으) 면서” with the action verbs below.

먹다 – 먹으면서

자다 – 자면서

보다 – 보면서

읽다 – 읽으면서

쓰다- 쓰면서

만나다 – 만나면서

운동하다 – 운동하면서

**걷다 – 걸으면서

타다 – 타면서

As you see the examples above, you use 으 with consonant ending such a 먹다 – 먹으면서. Try to make your own sentences such a “I saw her while riding a car/나는 차를 타면서 그녀를 보았다”