How the word "seit" is translated into English
Ich wohne seit 2020 in Berlin.
[ˈɪç ˈvoːnə ˈzaɪ̯t 2020 ˈɪn bɛrˈliːn.]
I've been living in Berlin since 2020.
Wir warten schon seit einer Stunde.
[ˈviːɐ̯ ˈvartn̩ ˈʃoːn ˈzaɪ̯t ˈaɪ̯nɐ ˈʃtʊndə.]
We've been waiting for an hour.
Seit wann lernst du Deutsch?
[ˈzaɪ̯t ˈvan ˈlɛrnst ˈduː ˈdɔɪ̯tʃ?]
How long have you been learning German?
"seit" 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.