

Ich war vor zwei Tagen beim Arzt.
[ˈɪç ˈvaːɐ̯ ˈfoːɐ̯ ˈtsvaɪ̯ ˈtaːɡn̩ ˈbaɪ̯m ˈaːɐ̯tst.]
I went to the doctor two days ago.
Er hat vor einer Stunde angerufen.
[ˈeːɐ̯ ˈhat ˈfoːɐ̯ ˈaɪ̯nɐ ˈʃtʊndə ˈanɡəruːfn̩.]
He called an hour ago.
Wir sind vor drei Jahren umgezogen.
[ˈviːɐ̯ ˈzɪnt ˈfoːɐ̯ ˈdraɪ̯ ˈjaːrən ˈʊmɡətsoːɡn̩.]
We moved three years ago.
"vor" is in the lesson "When" (Level 42), 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.