

Este vaso térmico es muy útil.
[ˈeste ˈβaso ˈteɾmiko es muj ˈutil.]
This insulated cup is very useful.
¿Es útil esta máquina de café?
[¿es ˈutil ˈesta ˈmakina ðe kaˈfe?]
Is this coffee machine useful?
Este consejo no es útil.
[ˈeste konˈsexo no es ˈutil.]
This advice isn't useful.
"útil" is in the lesson "Drinks" (Level 40), 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.