언니는 일을 할 때 음악을 듣거나 노래를 부릅니다.
My sister either listens or sings a song when she works.
주말에 보통 영화를 보거나 친구하고 놀거나 책을 읽어요.
I usually either watch movies or play with my friends or read books during the weekends.
약속이 있거나 바쁘면 내일 만나지 않아도 괜찮아요.
If you have plans or are busy, we don't have to meet tomorrow.
슬프거나 기분이 나쁠 때는 재미있는 비디오를 보세요.
When you are either sad or feeling bad watch a fun movie.
숙제가 많거나 어려우면 선생님한테 이야기하세요.
If your homework is either too much or difficult, then please let your teacher know.


(2) -곤 하다 makes a habit
This form is used to indicate that the same action occurred several times in the past or else was repeated on a regular basis.

사람들은 신나는 연주를 통해 힘을 얻곤 했습니다.
People made a habit of gaining energy by playing instruments.
지난 학기에는 수업이 끝나면 도서관에 가곤 했어요.
During last semester, I made a habit of going to library after class.
어렸을 때는 점심 식사 후에 아이스크림을 먹곤 했어요.
When I was young, I made a habit of eating ice-cream after lunch.
초등학생 때는 주말에 야구를 하곤 했다.
When I was in elementary, I made a habit of playing baseball during the weekends.
1년 전에는 자기 전에 일기를 쓰곤 했다.
About a year ago, I had a habit of writing journals before going to sleep.


(3) -듯이 as if...
This form is used to indicate an identical quality or condition of the noun.

냄비, 접시 등을 가지고 사물놀이를 하듯이 공연합니다.
They play with pots and dishes as if they are playing Samulnori.
아무리 돈이 많아도 돈을 물 쓰듯이 쓰면 안 돼요.
Even if you have a lot of money, you shouldn't use it as if you use water.
여름에는 조금만 운동해도 비 오듯이 땀이 흘러요.
In summer time, you get sweat easily as if it rains.
시간이 물 흐르듯이 빨리 지나갔어요.
The time went by so fast as if the water streams.
토니는 한국 사람이 말하듯이 한국말을 해요.
Tony speaks Korean as if he is a Korean.


(4) 얼마나(어찌나, 어떻게나) -ㄴ지/은지/는지 how much~, so much~ that
This form is used to indicate cause or reason.

연주가 얼마나 신나는지 사람들은 자기도 모르게 어깨춤을 춥니다.
The performance is so exciting that people are automatically dancing with their shoulders.
낮에는 얼마나 더운지 밖에 나갈 수 없을 정도예요.
It is so hot in the afternoon that you can't even go outside.
제가 얼마나 배가 고픈지 아무도 모를 거예요.
You have no idea how much I am hungry.
파티가 얼마나 재미있었는지 시간 가는 줄 몰랐어요.
The party was so fun that I didn't even know the time passing.
숙제가 얼마나 많은지 잠을 못 잘 정도예요.
The homework is so much that I can't even go to sleep.