Usages of útil
Quando se trata de reuniões longas, seria útil permitir momentos de pausa para não cansar os participantes.
When it comes to long meetings, it would be useful to allow break times so as not to tire the participants.
Estudar é útil.
Studying is useful.
Foi difícil descartar as ideias menos úteis, mas tornou o projeto mais objetivo.
It was hard to discard the less useful ideas, but it made the project more focused.
Elon.io is an online learning platform
We have an entire course teaching Portuguese grammar and vocabulary.