

Die Katze schläft unter dem Tisch.
[ˈdiː ˈkatsə ˈʃlɛːft ˈʊntɐ ˈdeːm ˈtɪʃ.]
The cat is sleeping under the table.
Ist der Schlüssel unter dem Sofa?
[ˈɪst deːɐ ˈʃlʏsl̩ ˈʊntɐ ˈdeːm ˈzoːfa?]
Is the key under the sofa?
Meine Schuhe sind nicht unter dem Bett.
[ˈmaɪ̯nə ˈʃuːə ˈzɪnt ˈnɪçt ˈʊntɐ ˈdeːm ˈbɛt.]
My shoes aren't under the bed.
"unter" is in the lesson "Adverbs 1" (Level 23), along with 15 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.