I could catch you could catch he could catch we could catch you could catch they could catch
Forma com V-ing
I could be catching you could be catching he could be catching we could be catching you could be catching they could be catching
Perfeito
I could have caught you could have caught he could have caught we could have caught you could have caught they could have caught
Perfeito com V-ing
I could have been catching you could have been catching he could have been catching we could have been catching you could have been catching they could have been catching
Negação
Forma simple
I could not catch you could not catch he could not catch we could not catch you could not catch they could not catch
Forma com V-ing
I could not be catching you could not be catching he could not be catching we could not be catching you could not be catching they could not be catching
Perfeito
I could not have caught you could not have caught he could not have caught we could not have caught you could not have caught they could not have caught
Perfeito com V-ing
I could not have been catching you could not have been catching he could not have been catching we could not have been catching you could not have been catching they could not have been catching
Forma interrogativa
Forma simple
could I catch? could you catch? could he catch? could we catch? could you catch? could they catch?
Forma com V-ing
could I be catching? could you be catching? could he be catching? could we be catching? could you be catching? could they be catching?
Perfeito
could I have caught? could you have caught? could he have caught? could we have caught? could you have caught? could they have caught?
Perfeito com V-ing
could I have been catching? could you have been catching? could he have been catching? could we have been catching? could you have been catching? could they have been catching?
Forma interro-Negação
Forma simple
could I not catch? could you not catch? could he not catch? could we not catch? could you not catch? could they not catch?
Forma com V-ing
could I not be catching? could you not be catching? could he not be catching? could we not be catching? could you not be catching? could they not be catching?
Perfeito
could I not have caught? could you not have caught? could he not have caught? could we not have caught? could you not have caught? could they not have caught?
Perfeito com V-ing
could I not have been catching? could you not have been catching? could he not have been catching? could we not have been catching? could you not have been catching? could they not have been catching?