

Der Zug war weg, so haben wir ein Taxi genommen.
[deːɐ ˈtsuːk ˈvaːɐ̯ ˈvɛk, ˈzoː ˈhaːbn̩ ˈviːɐ̯ ˈaɪ̯n ˈtaksi ɡəˈnɔmən.]
The train had gone, so we took a taxi.
Wenn du Fragen hast, so ruf mich einfach an.
[ˈvɛn ˈduː ˈfraːɡn̩ ˈhast, ˈzoː ˈruːf ˈmɪç ˈaɪ̯nfax ˈan.]
If you have any questions, then just call me.
Ich hatte kein Geld dabei, so hat mein Freund bezahlt.
[ˈɪç ˈhatə ˈkaɪ̯n ˈɡɛlt daˈbaɪ̯, ˈzoː ˈhat ˈmaɪ̯n ˈfrɔɪ̯nt bəˈtsaːlt.]
I didn't have any money on me, so my friend paid.
"so" is in the lesson "Conjunctions" (Level 32), along with 13 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.