

Unser Sohn ist fünf Jahre alt.
[ˈʊnzɐ ˈzoːn ˈɪst ˈfʏnf ˈjaːrə ˈalt.]
Our son is five years old.
Hast du einen Sohn oder eine Tochter?
[ˈhast ˈduː ˈaɪ̯nən ˈzoːn ˈoːdɐ ˈaɪ̯nə ˈtɔxtɐ?]
Do you have a son or a daughter?
Mein Sohn geht noch nicht zur Schule.
[ˈmaɪ̯n ˈzoːn ˈɡeːt ˈnɔx ˈnɪçt ˈtsuːɐ̯ ˈʃuːlə.]
My son doesn't go to school yet.
"der Sohn" is in the lesson "Family 2" (Level 24), 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.