A grammar pattern used to recall or describe past experiences or repeated actions.
When to use
Recalling past experiences, Describing repeated past actions, Contrasting past facts
The nuance
Attach -(았/었)던 to the verb stem to indicate past repeated or experienced actions. It mainly expresses recollection, explanation, contrast, or emphasis. Although it indicates past tense, unlike simple past, it implies that the experience or state is different now or no longer continues.
