A grammar teacher who answers your question.

Structured answers, not walls of text.

• Quick answer first. The one-paragraph version up top — read it and go, or keep scrolling for depth.
• The cases that matter. Answers break into the real usage patterns (accidental vs irreversible vs completed) instead of one vague rule.
• Examples you can hear. Every example sentence has audio at adjustable speed — grammar lives in your ear, not just your eyes.
• Ask about any sentence. Paste something you read and ask “why does this mean that?” — it explains that exact sentence.
• Follow-ups included. Each answer suggests the natural next questions — pull the thread as far as you like.
• Not sure what to ask? Curated starter questions cover the classics: が vs は, て-form, 〜ようになる and more.