Japanese grammar, said out loud
You can read it.
Can you say it?
Duolingo teaches you to understand Japanese. Katachi makes you say it — one grammar pattern at a time, with corrections that tell you why.
Transform this
公園で遊びます。
kouen de asobimasu
I play at the park.
【 行きます 】
公園でに行きます
Particle You used 「で」 where this sentence needs 「に」. で marks where something happens; に marks where you are heading.
Target
公園に行きます。
Say it, don't pick it
No multiple choice. You get a pattern and a cue, and you produce the sentence — by voice, or typed when you can't speak.
Corrections that explain
Not a red ✕. The mistake is underlined, the fix is written above it, and one sentence tells you why — the way a teacher marks a page.
Finishing counts, not perfection
A unit is complete when you've said every sentence with nothing on screen. Wrong answers come back in review. That's the whole loop.