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verb

sein

/bˈɪn/

first-person singular present of sein

to be (first-person singular present: "am")

Definitions

  1. 1

    used to state identity, description, or characteristic of the speaker

    “Ich bin heute sehr müde nach der langen Arbeit.”

    I am very tired today after the long work.

  2. 2

    used to state location or origin of the speaker

    “Ich bin gerade in der Küche und koche Abendessen.”

    I am currently in the kitchen cooking dinner.

  3. 3

    used with a past participle to form the perfect tense of certain verbs (motion/change of state)

    “Ich bin gestern früh nach Hause gegangen.”

    I went home early yesterday.

Conjugation

Present

ich bin
du bist
er/sie/es ist
wir sind
ihr seid
sie/Sie sind

Simple Past (Präteritum)

ich war
du warst
er/sie/es war

Perfect

ich bin gewesen

Future

ich werde sein

"Bin" is only used with the subject "ich" (I); it is one of the most irregular and frequent verb forms in German, so it must be memorized rather than derived from a pattern.