

El coche chocó contra un árbol.
[el ˈkoʧe ʧoˈko ˈkontɾa un ˈaɾβol.]
The car crashed into a tree.
¿Juegas contra tu hermano?
[¿ˈxweɣas ˈkontɾa tu eɾˈmano?]
Do you play against your brother?
Estoy contra esa idea.
[esˈtoj ˈkontɾa ˈesa iˈðea.]
I'm against that idea.
"contra" is in the lesson "Adverbs 4" (Level 37), along with 11 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.