I could whistle you could whistle she could whistle we could whistle you could whistle they could whistle
Forme en V-ing
I could be whistling you could be whistling she could be whistling we could be whistling you could be whistling they could be whistling
Perfect
I could have whistled you could have whistled she could have whistled we could have whistled you could have whistled they could have whistled
Perfect en V-ing
I could have been whistling you could have been whistling she could have been whistling we could have been whistling you could have been whistling they could have been whistling
Négation
Forme simple
I couldn't whistle you couldn't whistle she couldn't whistle we couldn't whistle you couldn't whistle they couldn't whistle
Forme en V-ing
I couldn't be whistling you couldn't be whistling she couldn't be whistling we couldn't be whistling you couldn't be whistling they couldn't be whistling
Perfect
I couldn't have whistled you couldn't have whistled she couldn't have whistled we couldn't have whistled you couldn't have whistled they couldn't have whistled
Perfect en V-ing
I couldn't have been whistling you couldn't have been whistling she couldn't have been whistling we couldn't have been whistling you couldn't have been whistling they couldn't have been whistling
Forme interrogative
Forme simple
could I whistle? could you whistle? could she whistle? could we whistle? could you whistle? could they whistle?
Forme en V-ing
could I be whistling? could you be whistling? could she be whistling? could we be whistling? could you be whistling? could they be whistling?
Perfect
could I have whistled? could you have whistled? could she have whistled? could we have whistled? could you have whistled? could they have whistled?
Perfect en V-ing
could I have been whistling? could you have been whistling? could she have been whistling? could we have been whistling? could you have been whistling? could they have been whistling?
Forme interro-négative
Forme simple
couldn't I whistle? couldn't you whistle? couldn't she whistle? couldn't we whistle? couldn't you whistle? couldn't they whistle?
Forme en V-ing
couldn't I be whistling? couldn't you be whistling? couldn't she be whistling? couldn't we be whistling? couldn't you be whistling? couldn't they be whistling?
Perfect
couldn't I have whistled? couldn't you have whistled? couldn't she have whistled? couldn't we have whistled? couldn't you have whistled? couldn't they have whistled?
Perfect en V-ing
couldn't I have been whistling? couldn't you have been whistling? couldn't she have been whistling? couldn't we have been whistling? couldn't you have been whistling? couldn't they have been whistling?