Conjugação do verbo inglês
COULD UNTIE

Verbo regular: untie - untied - untied

Afirmação

Forma simple	Forma com V-ing
I could untie you could untie he could untie we could untie you could untie they could untie	I could be untying you could be untying he could be untying we could be untying you could be untying they could be untying
Perfeito	Perfeito com V-ing
I could have untied you could have untied he could have untied we could have untied you could have untied they could have untied	I could have been untying you could have been untying he could have been untying we could have been untying you could have been untying they could have been untying

Negação

Forma simple	Forma com V-ing
I could not untie you could not untie he could not untie we could not untie you could not untie they could not untie	I could not be untying you could not be untying he could not be untying we could not be untying you could not be untying they could not be untying
Perfeito	Perfeito com V-ing
I could not have untied you could not have untied he could not have untied we could not have untied you could not have untied they could not have untied	I could not have been untying you could not have been untying he could not have been untying we could not have been untying you could not have been untying they could not have been untying

Forma interrogativa

Forma simple	Forma com V-ing
could I untie? could you untie? could he untie? could we untie? could you untie? could they untie?	could I be untying? could you be untying? could he be untying? could we be untying? could you be untying? could they be untying?
Perfeito	Perfeito com V-ing
could I have untied? could you have untied? could he have untied? could we have untied? could you have untied? could they have untied?	could I have been untying? could you have been untying? could he have been untying? could we have been untying? could you have been untying? could they have been untying?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not untie? could you not untie? could he not untie? could we not untie? could you not untie? could they not untie?	could I not be untying? could you not be untying? could he not be untying? could we not be untying? could you not be untying? could they not be untying?
Perfeito	Perfeito com V-ing
could I not have untied? could you not have untied? could he not have untied? could we not have untied? could you not have untied? could they not have untied?	could I not have been untying? could you not have been untying? could he not have been untying? could we not have been untying? could you not have been untying? could they not have been untying?