
Verbe régulier : derive -  derived - derived
Traduction française : dériver de - provenir de 
Forme simple | Forme en V-ing | 
| I could derive you could derive she could derive we could derive you could derive they could derive  | I could be deriving you could be deriving she could be deriving we could be deriving you could be deriving they could be deriving  | 
Perfect | Perfect en V-ing | 
| I could have derived you could have derived she could have derived we could have derived you could have derived they could have derived  | I could have been deriving you could have been deriving she could have been deriving we could have been deriving you could have been deriving they could have been deriving  | 
Forme simple | Forme en V-ing | 
| I couldn't derive you couldn't derive she couldn't derive we couldn't derive you couldn't derive they couldn't derive  | I couldn't be deriving you couldn't be deriving she couldn't be deriving we couldn't be deriving you couldn't be deriving they couldn't be deriving  | 
Perfect | Perfect en V-ing | 
| I couldn't have derived you couldn't have derived she couldn't have derived we couldn't have derived you couldn't have derived they couldn't have derived  | I couldn't have been deriving you couldn't have been deriving she couldn't have been deriving we couldn't have been deriving you couldn't have been deriving they couldn't have been deriving  | 
Forme simple | Forme en V-ing | 
| could I derive? could you derive? could she derive? could we derive? could you derive? could they derive?  | could I be deriving? could you be deriving? could she be deriving? could we be deriving? could you be deriving? could they be deriving?  | 
Perfect | Perfect en V-ing | 
| could I have derived? could you have derived? could she have derived? could we have derived? could you have derived? could they have derived?  | could I have been deriving? could you have been deriving? could she have been deriving? could we have been deriving? could you have been deriving? could they have been deriving?  | 
Forme simple | Forme en V-ing | 
| couldn't I derive? couldn't you derive? couldn't she derive? couldn't we derive? couldn't you derive? couldn't they derive?  | couldn't I be deriving? couldn't you be deriving? couldn't she be deriving? couldn't we be deriving? couldn't you be deriving? couldn't they be deriving?  | 
Perfect | Perfect en V-ing | 
| couldn't I have derived? couldn't you have derived? couldn't she have derived? couldn't we have derived? couldn't you have derived? couldn't they have derived?  | couldn't I have been deriving? couldn't you have been deriving? couldn't she have been deriving? couldn't we have been deriving? couldn't you have been deriving? couldn't they have been deriving?  |