
Verbo regular: prevent - prevented - prevented
| Presente | Presente contínuo | Pretérito | Preterito contínuo | 
| I prevent you prevent he prevents we prevent you prevent they prevent | I am preventing you are preventing he is preventing we are preventing you are preventing they are preventing | I prevented you prevented he prevented we prevented you prevented they prevented | I was preventing you were preventing he was preventing we were preventing you were preventing they were preventing | 
| Presente perfeito | Presente perfeito contínuo | Mais perfeito | Contínuo mais perfeito | 
| I have prevented you have prevented he has prevented we have prevented you have prevented they have prevented | I have been preventing you have been preventing he has been preventing we have been preventing you have been preventing they have been preventing | I had prevented you had prevented he had prevented we had prevented you had prevented they had prevented | I had been preventing you had been preventing he had been preventing we had been preventing you had been preventing they had been preventing | 
| Futuro | Futuro contínuo | futuro perfeito | futuro perfeito contínuo | 
| I will prevent you will prevent he will prevent we will prevent you will prevent they will prevent | I will be preventing you will be preventing he will be preventing we will be preventing you will be preventing they will be preventing | I will have prevented you will have prevented he will have prevented we will have prevented you will have prevented they will have prevented | I will have been preventing you will have been preventing he will have been preventing we will have been preventing you will have been preventing they will have been preventing | 
| Presente | Presente contínuo | Passado | Passado contínuo | 
| I would prevent you would prevent he would prevent we would prevent you would prevent they would prevent | I would be preventing you would be preventing he would be preventing we would be preventing you would be preventing they would be preventing | I would have prevented you would have prevented he would have prevented we would have prevented you would have prevented they would have prevented | I would have been preventing you would have been preventing he would have been preventing we would have been preventing you would have been preventing they would have been preventing | 
| Infinitivo | Imperativo | 
| Infinitivo | Imperativo | ||
| to prevent | prevent Let's prevent prevent | 
| Presente | Passado | ||
| preventing | prevented |