I could shorten you could shorten he could shorten we could shorten you could shorten they could shorten
Forma com V-ing
I could be shortening you could be shortening he could be shortening we could be shortening you could be shortening they could be shortening
Perfeito
I could have shortened you could have shortened he could have shortened we could have shortened you could have shortened they could have shortened
Perfeito com V-ing
I could have been shortening you could have been shortening he could have been shortening we could have been shortening you could have been shortening they could have been shortening
Negação
Forma simple
I couldn't shorten you couldn't shorten he couldn't shorten we couldn't shorten you couldn't shorten they couldn't shorten
Forma com V-ing
I couldn't be shortening you couldn't be shortening he couldn't be shortening we couldn't be shortening you couldn't be shortening they couldn't be shortening
Perfeito
I couldn't have shortened you couldn't have shortened he couldn't have shortened we couldn't have shortened you couldn't have shortened they couldn't have shortened
Perfeito com V-ing
I couldn't have been shortening you couldn't have been shortening he couldn't have been shortening we couldn't have been shortening you couldn't have been shortening they couldn't have been shortening
Forma interrogativa
Forma simple
could I shorten? could you shorten? could he shorten? could we shorten? could you shorten? could they shorten?
Forma com V-ing
could I be shortening? could you be shortening? could he be shortening? could we be shortening? could you be shortening? could they be shortening?
Perfeito
could I have shortened? could you have shortened? could he have shortened? could we have shortened? could you have shortened? could they have shortened?
Perfeito com V-ing
could I have been shortening? could you have been shortening? could he have been shortening? could we have been shortening? could you have been shortening? could they have been shortening?
Forma interro-Negação
Forma simple
couldn't I shorten? couldn't you shorten? couldn't he shorten? couldn't we shorten? couldn't you shorten? couldn't they shorten?
Forma com V-ing
couldn't I be shortening? couldn't you be shortening? couldn't he be shortening? couldn't we be shortening? couldn't you be shortening? couldn't they be shortening?
Perfeito
couldn't I have shortened? couldn't you have shortened? couldn't he have shortened? couldn't we have shortened? couldn't you have shortened? couldn't they have shortened?
Perfeito com V-ing
couldn't I have been shortening? couldn't you have been shortening? couldn't he have been shortening? couldn't we have been shortening? couldn't you have been shortening? couldn't they have been shortening?