L-a prevenit din timp ca traficul era aglomerat si sa plece mai devreme.
She warned him in advance that traffic was heavy and to leave earlier.
Medicul l-a prevenit ca daca nu ia tratamentul, situatia se poate agrava.
The doctor warned him that if he didn't take the treatment, the situation could worsen.
Este mai usor sa previi o problema decat sa o rezolvi dupa ce apare.
It's easier to prevent a problem than to solve it after it has appeared.
