

Vivo en Madrid.
[ˈbiβo em maˈðɾið.]
I live in Madrid.
¿Estás en casa?
[¿esˈtas eŋ ˈkasa?]
Are you at home?
El libro está en la mesa.
[el ˈliβɾo esˈta en la ˈmesa.]
The book is on the table.
"en" is in the lesson "Adverbs 1" (Level 23), along with 15 other useful words. LinDuo has 180 topic lessons like this one, 2,369 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.