
Verbo regular: prevent - prevented - prevented
Presente | Presente continuo | Pretérito | Pretérito continuo | 
| I prevent you prevent he prevents we prevent you prevent they prevent  | I'm preventing you're preventing he's preventing we're preventing you're preventing they're 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 perfecto | Presente perfecto continuo | Pluscuamperfecto | Pluscuamperfecto continuo | 
| I've prevented you've prevented he's prevented we've prevented you've prevented they've prevented  | I've been preventing you've been preventing he's been preventing we've been preventing you've been preventing they've been preventing  | I'd prevented you'd prevented he'd prevented we'd prevented you'd prevented they'd prevented  | I'd been preventing you'd been preventing he'd been preventing we'd been preventing you'd been preventing they'd been preventing  | 
Futuro simple | Futuro continuo | Futuro perfecto | Futuro perfecto contínuo | 
| I'll prevent you'll prevent he'll prevent we'll prevent you'll prevent they'll prevent  | I'll be preventing you'll be preventing he'll be preventing we'll be preventing you'll be preventing they'll be preventing  | I'll have prevented you'll have prevented he'll have prevented we'll have prevented you'll have prevented they'll have prevented  | I'll have been preventing you'll have been preventing he'll have been preventing we'll have been preventing you'll have been preventing they'll have been preventing  | 
Presente | Presente continuo | Passado | Passado continuo | 
| I'd prevent you'd prevent he'd prevent we'd prevent you'd prevent they'd prevent  | I'd be preventing you'd be preventing he'd be preventing we'd be preventing you'd be preventing they'd be preventing  | I'd have prevented you'd have prevented he'd have prevented we'd have prevented you'd have prevented they'd have prevented  | I'd have been preventing you'd have been preventing he'd have been preventing we'd have been preventing you'd have been preventing they'd have been preventing  | 
Infinitivo | Imperativo | 
Infinitivo | Imperativo | ||
| to prevent | prevent Let's prevent prevent  | 
Presente | Passado | ||
| preventing | prevented |