I could heat you could heat he could heat we could heat you could heat they could heat
Forme en V-ing
I could be heating you could be heating he could be heating we could be heating you could be heating they could be heating
Perfect
I could have heated you could have heated he could have heated we could have heated you could have heated they could have heated
Perfect en V-ing
I could have been heating you could have been heating he could have been heating we could have been heating you could have been heating they could have been heating
Négation
Forme simple
I couldn't heat you couldn't heat he couldn't heat we couldn't heat you couldn't heat they couldn't heat
Forme en V-ing
I couldn't be heating you couldn't be heating he couldn't be heating we couldn't be heating you couldn't be heating they couldn't be heating
Perfect
I couldn't have heated you couldn't have heated he couldn't have heated we couldn't have heated you couldn't have heated they couldn't have heated
Perfect en V-ing
I couldn't have been heating you couldn't have been heating he couldn't have been heating we couldn't have been heating you couldn't have been heating they couldn't have been heating
Forme interrogative
Forme simple
could I heat? could you heat? could he heat? could we heat? could you heat? could they heat?
Forme en V-ing
could I be heating? could you be heating? could he be heating? could we be heating? could you be heating? could they be heating?
Perfect
could I have heated? could you have heated? could he have heated? could we have heated? could you have heated? could they have heated?
Perfect en V-ing
could I have been heating? could you have been heating? could he have been heating? could we have been heating? could you have been heating? could they have been heating?
Forme interro-négative
Forme simple
couldn't I heat? couldn't you heat? couldn't he heat? couldn't we heat? couldn't you heat? couldn't they heat?
Forme en V-ing
couldn't I be heating? couldn't you be heating? couldn't he be heating? couldn't we be heating? couldn't you be heating? couldn't they be heating?
Perfect
couldn't I have heated? couldn't you have heated? couldn't he have heated? couldn't we have heated? couldn't you have heated? couldn't they have heated?
Perfect en V-ing
couldn't I have been heating? couldn't you have been heating? couldn't he have been heating? couldn't we have been heating? couldn't you have been heating? couldn't they have been heating?