Verb 'sein' (to be), present: ich bin (I am)

sein (to be) is the single most common verb in German, and it is completely irregular - its forms have to be memorised rather than derived from a rule.

For the first person singular (ich), the form is bin:

• Ich bin müde. (I am tired.)
• Ich bin Student. (I am a student.)
• Ich bin aus Deutschland. (I am from Germany.)

Use sein to describe who or what someone is, where they are, and how they are (states and characteristics).

Common mistake: never build a "regular" form like ich seine - the ich-form is simply bin.

The ich-form of 'sein' (to be) is 'bin': Ich bin müde.

'sein' is the most irregular verb; the ich-form is 'bin', never 'ich seine'.

Die ich-Form von 'sein' ist 'bin': Ich bin müde.