I could chopper you could chopper he could chopper we could chopper you could chopper they could chopper
Forma con V-ing
I could be choppering you could be choppering he could be choppering we could be choppering you could be choppering they could be choppering
Perfecto
I could have choppered you could have choppered he could have choppered we could have choppered you could have choppered they could have choppered
Perfecto con V-ing
I could have been choppering you could have been choppering he could have been choppering we could have been choppering you could have been choppering they could have been choppering
Negación
Forma simple
I couldn't chopper you couldn't chopper he couldn't chopper we couldn't chopper you couldn't chopper they couldn't chopper
Forma con V-ing
I couldn't be choppering you couldn't be choppering he couldn't be choppering we couldn't be choppering you couldn't be choppering they couldn't be choppering
Perfecto
I couldn't have choppered you couldn't have choppered he couldn't have choppered we couldn't have choppered you couldn't have choppered they couldn't have choppered
Perfecto con V-ing
I couldn't have been choppering you couldn't have been choppering he couldn't have been choppering we couldn't have been choppering you couldn't have been choppering they couldn't have been choppering
Forma interrogativa
Forma simple
could I chopper? could you chopper? could he chopper? could we chopper? could you chopper? could they chopper?
Forma con V-ing
could I be choppering? could you be choppering? could he be choppering? could we be choppering? could you be choppering? could they be choppering?
Perfecto
could I have choppered? could you have choppered? could he have choppered? could we have choppered? could you have choppered? could they have choppered?
Perfecto con V-ing
could I have been choppering? could you have been choppering? could he have been choppering? could we have been choppering? could you have been choppering? could they have been choppering?
Forma interro-negativa
Forma simple
couldn't I chopper? couldn't you chopper? couldn't he chopper? couldn't we chopper? couldn't you chopper? couldn't they chopper?
Forma con V-ing
couldn't I be choppering? couldn't you be choppering? couldn't he be choppering? couldn't we be choppering? couldn't you be choppering? couldn't they be choppering?
Perfecto
couldn't I have choppered? couldn't you have choppered? couldn't he have choppered? couldn't we have choppered? couldn't you have choppered? couldn't they have choppered?
Perfecto con V-ing
couldn't I have been choppering? couldn't you have been choppering? couldn't he have been choppering? couldn't we have been choppering? couldn't you have been choppering? couldn't they have been choppering?