
Verbe régulier : exchange -  exchanged - exchanged
Traduction française : échanger 
Forme simple | Forme en V-ing | 
| I could exchange you could exchange she could exchange we could exchange you could exchange they could exchange  | I could be exchanging you could be exchanging she could be exchanging we could be exchanging you could be exchanging they could be exchanging  | 
Perfect | Perfect en V-ing | 
| I could have exchanged you could have exchanged she could have exchanged we could have exchanged you could have exchanged they could have exchanged  | I could have been exchanging you could have been exchanging she could have been exchanging we could have been exchanging you could have been exchanging they could have been exchanging  | 
Forme simple | Forme en V-ing | 
| I couldn't exchange you couldn't exchange she couldn't exchange we couldn't exchange you couldn't exchange they couldn't exchange  | I couldn't be exchanging you couldn't be exchanging she couldn't be exchanging we couldn't be exchanging you couldn't be exchanging they couldn't be exchanging  | 
Perfect | Perfect en V-ing | 
| I couldn't have exchanged you couldn't have exchanged she couldn't have exchanged we couldn't have exchanged you couldn't have exchanged they couldn't have exchanged  | I couldn't have been exchanging you couldn't have been exchanging she couldn't have been exchanging we couldn't have been exchanging you couldn't have been exchanging they couldn't have been exchanging  | 
Forme simple | Forme en V-ing | 
| could I exchange? could you exchange? could she exchange? could we exchange? could you exchange? could they exchange?  | could I be exchanging? could you be exchanging? could she be exchanging? could we be exchanging? could you be exchanging? could they be exchanging?  | 
Perfect | Perfect en V-ing | 
| could I have exchanged? could you have exchanged? could she have exchanged? could we have exchanged? could you have exchanged? could they have exchanged?  | could I have been exchanging? could you have been exchanging? could she have been exchanging? could we have been exchanging? could you have been exchanging? could they have been exchanging?  | 
Forme simple | Forme en V-ing | 
| couldn't I exchange? couldn't you exchange? couldn't she exchange? couldn't we exchange? couldn't you exchange? couldn't they exchange?  | couldn't I be exchanging? couldn't you be exchanging? couldn't she be exchanging? couldn't we be exchanging? couldn't you be exchanging? couldn't they be exchanging?  | 
Perfect | Perfect en V-ing | 
| couldn't I have exchanged? couldn't you have exchanged? couldn't she have exchanged? couldn't we have exchanged? couldn't you have exchanged? couldn't they have exchanged?  | couldn't I have been exchanging? couldn't you have been exchanging? couldn't she have been exchanging? couldn't we have been exchanging? couldn't you have been exchanging? couldn't they have been exchanging?  |