

Die Polizei hat den Dieb gestern Abend festgenommen.
[ˈdiː poliˈtsaɪ̯ ˈhat ˈdeːn ˈdiːp ˈɡɛstɐn ˈaːbn̩t ˈfɛstɡənɔmən.]
The police arrested the thief last night.
Wurde der Täter eigentlich schon festgenommen?
[ˈvʊrdə deːɐ ˈtɛːtɐ ˈaɪ̯ɡn̩tlɪç ˈʃoːn ˈfɛstɡənɔmən?]
Has the perpetrator actually been arrested yet?
Die Polizei konnte den Mann am Flughafen nicht festnehmen.
[ˈdiː poliˈtsaɪ̯ ˈkɔntə ˈdeːn ˈman ˈam ˈfluːkhaːfn̩ ˈnɪçt ˈfɛstneːmən.]
The police couldn't arrest the man at the airport.
"festnehmen" is in the lesson "Verbs 5" (Level 17), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.