I could summer you could summer she could summer we could summer you could summer they could summer
Forma con V-ing
I could be summering you could be summering she could be summering we could be summering you could be summering they could be summering
Perfecto
I could have summered you could have summered she could have summered we could have summered you could have summered they could have summered
Perfecto con V-ing
I could have been summering you could have been summering she could have been summering we could have been summering you could have been summering they could have been summering
Negación
Forma simple
I couldn't summer you couldn't summer she couldn't summer we couldn't summer you couldn't summer they couldn't summer
Forma con V-ing
I couldn't be summering you couldn't be summering she couldn't be summering we couldn't be summering you couldn't be summering they couldn't be summering
Perfecto
I couldn't have summered you couldn't have summered she couldn't have summered we couldn't have summered you couldn't have summered they couldn't have summered
Perfecto con V-ing
I couldn't have been summering you couldn't have been summering she couldn't have been summering we couldn't have been summering you couldn't have been summering they couldn't have been summering
Forma interrogativa
Forma simple
could I summer? could you summer? could she summer? could we summer? could you summer? could they summer?
Forma con V-ing
could I be summering? could you be summering? could she be summering? could we be summering? could you be summering? could they be summering?
Perfecto
could I have summered? could you have summered? could she have summered? could we have summered? could you have summered? could they have summered?
Perfecto con V-ing
could I have been summering? could you have been summering? could she have been summering? could we have been summering? could you have been summering? could they have been summering?
Forma interro-negativa
Forma simple
couldn't I summer? couldn't you summer? couldn't she summer? couldn't we summer? couldn't you summer? couldn't they summer?
Forma con V-ing
couldn't I be summering? couldn't you be summering? couldn't she be summering? couldn't we be summering? couldn't you be summering? couldn't they be summering?
Perfecto
couldn't I have summered? couldn't you have summered? couldn't she have summered? couldn't we have summered? couldn't you have summered? couldn't they have summered?
Perfecto con V-ing
couldn't I have been summering? couldn't you have been summering? couldn't she have been summering? couldn't we have been summering? couldn't you have been summering? couldn't they have been summering?