Korean grammar · Level 4 · 4급
V/A-았/었던 것이다 (-았/었던 거예요)
So that's why … (explaining a past event)
history and story writing keep asking 'why did that happen?', and at the end of a paragraph the answer arrives: 'so that is why'. In speech you say the same thing when you suddenly understand: 'Oh, so that's why you …!'
Example
그 사람은 사실 나를 도와주려고 했던 것이다.
That person was, in fact, trying to help me.

The full explanation is in the unit · part of the Level 4 Pass, opening soon · Level 4, Unit 10
The king who made an alphabet
The rule with a table, Sori’s tips, practice that checks itself, a review room and a one-page cheat sheet.
See the unit preview →