Free Forever
Access all grammar guides, quizzes, and flashcards without paying a cent. Quality education should be accessible to everyone.
| Form | Affirmative | Negative |
|---|---|---|
| Present | 溜息をつく | 溜息をつかない |
| Polite | 溜息をつきます | 溜息をつきません |
| Past | 溜息をついた | 溜息をつかなかった |
| Polite + Past | 溜息をつきました | 溜息をつきませんでした |
| Te-form | 溜息をついて | 溜息をつかなくて |
| Potential | 溜息をつける | 溜息をつけない |
| Passive | 溜息をつかれる | 溜息をつかれない |
| Causative | 溜息をつかせる | 溜息をつかせない |
| Causative + Passive | 溜息をつかされる | 溜息をつかされない |
| Imperative | 溜息をつけ | 溜息をつくな |
Sottaku
Sottaku is an app for learning a growing range of Asian and European languages with a strong focus on SRS. It includes automatic flashcard creation for hundreds of thousands of words, grammar breakdowns in example sentences, language-specific study packs where available, adaptive quizzes, mobile apps, a browser extension, and community features. Give it a try now! All learning content is free with no limits on flashcards or study time.
Sottaku is built to match the habits of successful learners. By using Sottaku, you will naturally learn in the most efficient way possible, as proven by countless success stories in the language learning community.
Free Forever
Access all grammar guides, quizzes, and flashcards without paying a cent. Quality education should be accessible to everyone.
Smart SRS System
Our flashcard system uses the FSRS algorithm (also used in Anki) to optimize your review schedule and maximize retention.
Comprehensive Content
From hanzi, kana, hangul, and European vocabulary basics to grammar and reading practice where available, we have lessons for every level. Practice with quizzes tailored to your skill.
Community Chat
Ask level-appropriate questions and get help from the community. Learn together with fellow learners across every supported language.