Teacher notes — Grammar for Korean Speakers
In, on, at: the time prepositions Korean speakers mix up
- Root cause: Korean uses one time particle (에) for everything English splits into at/on/in. This is a translation habit, not a memory problem, so repetition beats explanation.
- "At night" vs "in the morning/afternoon/evening" is a genuine irregularity in English itself. Name it as an exception rather than trying to force logic onto it.
- Sort-then-check works better than lecture-then-practice. Let the wrong piles generate the explanation.
- Rerun the same drill type a week later with new vocabulary. First-language interference errors come back fast if you only correct them once.