V + -아/어 두다 – Do & Keep in Preparation for Later

Conjugation & Pattern

• Verb stem ending in ㅏ, ㅗ: + -아 두다 (잠그다 -> 잠가 두다, 사다 -> 사 두다)
• Verb stem ending in other vowels: + -어 두다 (적다 -> 적어 두다, 만들다 -> 만들어 두다)
• Verb stem ending in 하다: -> 해 두다 (예약하다 -> 예약해 두다)

Detailed Usage

Very close in meaning to '-아/어 놓다' (completing an action and maintaining its result), but '-아/어 두다' places stronger emphasis on storing, preserving, or preparing something for later use.

Example Sentences

1. 1

   서랍 안에 중요한 서류가 많아서 항상 잠가 둡니다.

   Seorap ane jungyohan seoryuga manaseo hangsang jamga dumnida.

   Since there are many important documents in the drawer, I always keep it locked.

2. 2

   동창들의 전화번호를 적어 둔 수첩을 잃어버렸어요.

   Dongchangdeurui jeonhwabeonhoreul jeogeo dun sucheobeul ileobeoryeosseoyo.

   I lost the notebook in which I had written down my classmates' phone numbers.

3. 3

   주말에는 기차표가 매진되기 쉬우니까 미리 예매해 두세요.

   Jumareneun gichapyoga maejindoegi swiunikka miri yemaehae duseyo.

   Train tickets sell out easily on weekends, so please book them in advance.