です (desu) and だ (da) both mean "to be" — the difference is politeness level.
Used in formal situations, with strangers, teachers, at work. This is what you should use as a beginner — always safe!
Used with close friends and family. Sounds natural in casual speech. Don't use with strangers or in professional settings.
Click any sentence to hear it! 🔊
Try making your own sentences using です with Yuki. She'll correct you and give feedback!