I could skin you could skin he could skin we could skin you could skin they could skin
Forma com V-ing
I could be skinning you could be skinning he could be skinning we could be skinning you could be skinning they could be skinning
Perfeito
I could have skinned you could have skinned he could have skinned we could have skinned you could have skinned they could have skinned
Perfeito com V-ing
I could have been skinning you could have been skinning he could have been skinning we could have been skinning you could have been skinning they could have been skinning
Negação
Forma simple
I couldn't skin you couldn't skin he couldn't skin we couldn't skin you couldn't skin they couldn't skin
Forma com V-ing
I couldn't be skinning you couldn't be skinning he couldn't be skinning we couldn't be skinning you couldn't be skinning they couldn't be skinning
Perfeito
I couldn't have skinned you couldn't have skinned he couldn't have skinned we couldn't have skinned you couldn't have skinned they couldn't have skinned
Perfeito com V-ing
I couldn't have been skinning you couldn't have been skinning he couldn't have been skinning we couldn't have been skinning you couldn't have been skinning they couldn't have been skinning
Forma interrogativa
Forma simple
could I skin? could you skin? could he skin? could we skin? could you skin? could they skin?
Forma com V-ing
could I be skinning? could you be skinning? could he be skinning? could we be skinning? could you be skinning? could they be skinning?
Perfeito
could I have skinned? could you have skinned? could he have skinned? could we have skinned? could you have skinned? could they have skinned?
Perfeito com V-ing
could I have been skinning? could you have been skinning? could he have been skinning? could we have been skinning? could you have been skinning? could they have been skinning?
Forma interro-Negação
Forma simple
couldn't I skin? couldn't you skin? couldn't he skin? couldn't we skin? couldn't you skin? couldn't they skin?
Forma com V-ing
couldn't I be skinning? couldn't you be skinning? couldn't he be skinning? couldn't we be skinning? couldn't you be skinning? couldn't they be skinning?
Perfeito
couldn't I have skinned? couldn't you have skinned? couldn't he have skinned? couldn't we have skinned? couldn't you have skinned? couldn't they have skinned?
Perfeito com V-ing
couldn't I have been skinning? couldn't you have been skinning? couldn't he have been skinning? couldn't we have been skinning? couldn't you have been skinning? couldn't they have been skinning?