untersuchen: haben or sein? Perfect tense: hat untersucht
In English: to examine, investigate · B1
The answer
In the Perfekt, untersuchen takes: haben
- Perfekt auxiliary
- haben
- Partizip II
- untersucht
- Perfekt
- hat untersucht
Wortino stores one auxiliary per verb; some verbs can take both depending on the meaning.
Perfekt example
Ich habe es gründlich untersucht.
I studied it thoroughly.
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Wortino turns verbs into flashcards with spaced repetition: a word you struggle with comes back soon, one you know comes back less often.