
Verbe régulier : fire - fired - fired
Forme simple | Forme en V-ing | 
| I could fire you could fire she could fire we could fire you could fire they could fire  | I could be firing you could be firing she could be firing we could be firing you could be firing they could be firing  | 
Perfect | Perfect en V-ing | 
| I could have fired you could have fired she could have fired we could have fired you could have fired they could have fired  | I could have been firing you could have been firing she could have been firing we could have been firing you could have been firing they could have been firing  | 
Forme simple | Forme en V-ing | 
| I couldn't fire you couldn't fire she couldn't fire we couldn't fire you couldn't fire they couldn't fire  | I couldn't be firing you couldn't be firing she couldn't be firing we couldn't be firing you couldn't be firing they couldn't be firing  | 
Perfect | Perfect en V-ing | 
| I couldn't have fired you couldn't have fired she couldn't have fired we couldn't have fired you couldn't have fired they couldn't have fired  | I couldn't have been firing you couldn't have been firing she couldn't have been firing we couldn't have been firing you couldn't have been firing they couldn't have been firing  | 
Forme simple | Forme en V-ing | 
| could I fire? could you fire? could she fire? could we fire? could you fire? could they fire?  | could I be firing? could you be firing? could she be firing? could we be firing? could you be firing? could they be firing?  | 
Perfect | Perfect en V-ing | 
| could I have fired? could you have fired? could she have fired? could we have fired? could you have fired? could they have fired?  | could I have been firing? could you have been firing? could she have been firing? could we have been firing? could you have been firing? could they have been firing?  | 
Forme simple | Forme en V-ing | 
| couldn't I fire? couldn't you fire? couldn't she fire? couldn't we fire? couldn't you fire? couldn't they fire?  | couldn't I be firing? couldn't you be firing? couldn't she be firing? couldn't we be firing? couldn't you be firing? couldn't they be firing?  | 
Perfect | Perfect en V-ing | 
| couldn't I have fired? couldn't you have fired? couldn't she have fired? couldn't we have fired? couldn't you have fired? couldn't they have fired?  | couldn't I have been firing? couldn't you have been firing? couldn't she have been firing? couldn't we have been firing? couldn't you have been firing? couldn't they have been firing?  |