

Esta es la calle principal.
[ˈesta ez la ˈkaʎe pɾinθiˈpal.]
This is the main street.
¿Dónde está la entrada principal?
[¿ˈdonde esˈta la enˈtɾaða pɾinθiˈpal?]
Where is the main entrance?
El plato principal es pescado.
[el ˈplato pɾinθiˈpal es pesˈkaðo.]
The main course is fish.
"principal" is in the lesson "Adjectives 6" (Level 40), along with 10 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.