Free Forever
Access all grammar guides, quizzes, and flashcards without paying a cent. Quality education should be accessible to everyone.
| Form | Inflected form |
|---|---|
| Base | 관찰하다 |
| Present | 관찰한다 |
| Polite | 관찰해요 |
| Formal | 관찰합니다 |
| Past | 관찰했다 |
| Past + Polite | 관찰했어요 |
| Guess + Polite | 관찰하겠어요 |
| Connective | 관찰하고 |
| Conditional | 관찰하면 |
| Volitional | 관찰하자 |
| Imperative | 관찰해라 |
| Imperative + Polite | 관찰하세요 |
| Attributive | 관찰하는 / 관찰한 / 관찰할 |
Sottaku
Sottaku is an app for learning Chinese, Japanese, Korean, English, Spanish, French, German, and Italian 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 all 8 supported languages.