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