일주일

In a sentence

• 나는 일주일 동안 한국에 머물렀습니다.

  I stayed in Korea for a week.

  Here, 일주일 (il-ju-il) means 'a week' as a duration of time (for a week).

• 일주일 후에 다시 만납시다.

  Let's meet again in a week.

  In this sentence, 일주일 (il-ju-il) refers to 'a week' as a specific point in time (in a week).

• 이 일주일은 정말 바빴어요.

  This past week was really busy.

  Here, 일주일 (il-ju-il) is used to refer to a previous time frame of one week.