1. A/V-았/었을 때 & V-(으)ㄴ 적이 있다[없다]

2. 드라마: 내가 가장 예뻤을 때, 청춘의 기록

-Bibliographe

TalkToMeInKorean, “Talk to me in Korean level C”, Seoul, Longtail Books, 2015.

HongEunsil, “Korean Speaking Advanced 1-Daily Conversation”, Seoul, Hangeulpark, 2015.

HongEunsil, “Korean Speaking Advanced 2-Story Telling ”, Seoul, Hangeulpark, 2015.

HongEunsil, “Korean Speaking Advanced 3-Presentation”, Seoul, Hangeulpark, 2015.

AhnJeanmyoung, “Korean Grammar in Use Advanced”, Seoul, Darakwon, 2013.