Core Grammar Rule: ~아/어 놓다/두다
This grammar pattern is attached to a verb to indicate that an action has been completed and its resulting state is being maintained for future use. It emphasizes the preparatory nature of the action.
Meaning & Usage
Meaning: It translates to "to do something in advance" or "to have done something (and left it that way)." It combines the action (verb) with the idea of 'placing' (놓다) or 'keeping' (두다) the result.
When to use: Use it when talking about preparations for an event, trip, or task. For example, booking tickets, packing bags, making food for guests, or leaving a window open. While 놓다 and 두다 are often interchangeable, 놓다 can carry a nuance of physically placing something, whereas 두다 can feel more like storing or keeping something (including abstract things like reservations). For beginners, they can be used almost identically.
Conjugation Rules
Rule: The conjugation depends on the last vowel of the verb stem before 다.
Stems ending in ㅏ or ㅗ: Add ~아 놓다/두다.
보다 (to see/watch) → 봐 놓다/두다
싸다 (to pack) → 싸 놓다/두다
Stems ending in other vowels: Add ~어 놓다/두다.
만들다 (to make) → 만들어 놓다/두다
적다 (to write) → 적어 놓다/두다
하다 verbs: They become ~해 놓다/두다.
준비하다 (to prepare) → 준비해 놓다/두다
예약하다 (to reserve) → 예약해 놓다/두다
Vowel ㅏ/ㅗ: ~아 놓다/두다 / Other Vowels: ~어 놓다/두다 / 하다 Verbs: ~해 놓다/두다
Native Nuance: ~았/었어요 vs. ~아/어 놓았어요
While both refer to a past action, they have different nuances. Confusing them can make your Korean sound unnatural.
Simple Past Tense (~았/었어요)
Context: This simply states that an action happened and was completed in the past. It's a factual report of an event. It doesn't necessarily imply that the result of the action is still relevant or maintained for the present moment.
Example: 어제 창문을 열었어요. (I opened the window yesterday.) - This is a simple fact. The window might be closed now.