Wortino

abbauen: haben or sein? Perfect tense: hat abgebaut

In English: to reduce; to dismantle · B1

The answer

In the Perfekt, abbauen takes: haben

Perfekt auxiliary
haben
Partizip II
abgebaut
Perfekt
hat abgebaut

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

More

Study it with cards

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