unterschreiben: haben or sein? Perfect tense: hat unterschrieben

In English: to sign · B1

The answer

In the Perfekt, unterschreiben takes: haben

Wortino stores one auxiliary per verb; some verbs can take both depending on the meaning.

Ich habe nichts unterschrieben.

I didn't sign anything.

Tatoeba · brauchinet · CC BY 2.0 FR

Hast du das unterschrieben?

Did you sign this?

Tatoeba · wolfgangth · CC BY 2.0 FR

Wortino turns verbs into flashcards with spaced repetition: a word you struggle with comes back soon, one you know comes back less often.