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