
Verbo regular: warn - warned - warned
Presente | Presente continuo | Pretérito | Pretérito continuo | 
| I warn you warn he warns we warn you warn they warn  | I'm warning you're warning he's warning we're warning you're warning they're warning  | I warned you warned he warned we warned you warned they warned  | I was warning you were warning he was warning we were warning you were warning they were warning  | 
Presente perfecto | Presente perfecto continuo | Pluscuamperfecto | Pluscuamperfecto continuo | 
| I've warned you've warned he's warned we've warned you've warned they've warned  | I've been warning you've been warning he's been warning we've been warning you've been warning they've been warning  | I'd warned you'd warned he'd warned we'd warned you'd warned they'd warned  | I'd been warning you'd been warning he'd been warning we'd been warning you'd been warning they'd been warning  | 
Futuro simple | Futuro continuo | Futuro perfecto | Futuro perfecto contínuo | 
| I'll warn you'll warn he'll warn we'll warn you'll warn they'll warn  | I'll be warning you'll be warning he'll be warning we'll be warning you'll be warning they'll be warning  | I'll have warned you'll have warned he'll have warned we'll have warned you'll have warned they'll have warned  | I'll have been warning you'll have been warning he'll have been warning we'll have been warning you'll have been warning they'll have been warning  | 
Presente | Presente continuo | Passado | Passado continuo | 
| I'd warn you'd warn he'd warn we'd warn you'd warn they'd warn  | I'd be warning you'd be warning he'd be warning we'd be warning you'd be warning they'd be warning  | I'd have warned you'd have warned he'd have warned we'd have warned you'd have warned they'd have warned  | I'd have been warning you'd have been warning he'd have been warning we'd have been warning you'd have been warning they'd have been warning  | 
Infinitivo | Imperativo | 
Infinitivo | Imperativo | ||
| to warn | warn Let's warn warn  | 
Presente | Passado | ||
| warning | warned |