1. to gain the capacity, skill, or opportunity to do something; to reach a state where one is capable of doing something
After months of training, she finally became able to run a marathon.
Após meses de treinamento, ela finalmente conseguiu correr uma maratona.
2. to develop the ability or permission to perform an action
He became able to speak fluent French after living in Paris for two years.
Ele tornou-se capaz de falar francês fluentemente após viver em Paris por dois anos.