Conjugação do verbo inglês
COULD UNFASTEN

Verbo regular: unfasten - unfastened - unfastened

Afirmação

Forma simple	Forma com V-ing
I could unfasten you could unfasten she could unfasten we could unfasten you could unfasten they could unfasten	I could be unfastening you could be unfastening she could be unfastening we could be unfastening you could be unfastening they could be unfastening
Perfeito	Perfeito com V-ing
I could have unfastened you could have unfastened she could have unfastened we could have unfastened you could have unfastened they could have unfastened	I could have been unfastening you could have been unfastening she could have been unfastening we could have been unfastening you could have been unfastening they could have been unfastening

Negação

Forma simple	Forma com V-ing
I could not unfasten you could not unfasten she could not unfasten we could not unfasten you could not unfasten they could not unfasten	I could not be unfastening you could not be unfastening she could not be unfastening we could not be unfastening you could not be unfastening they could not be unfastening
Perfeito	Perfeito com V-ing
I could not have unfastened you could not have unfastened she could not have unfastened we could not have unfastened you could not have unfastened they could not have unfastened	I could not have been unfastening you could not have been unfastening she could not have been unfastening we could not have been unfastening you could not have been unfastening they could not have been unfastening

Forma interrogativa

Forma simple	Forma com V-ing
could I unfasten? could you unfasten? could she unfasten? could we unfasten? could you unfasten? could they unfasten?	could I be unfastening? could you be unfastening? could she be unfastening? could we be unfastening? could you be unfastening? could they be unfastening?
Perfeito	Perfeito com V-ing
could I have unfastened? could you have unfastened? could she have unfastened? could we have unfastened? could you have unfastened? could they have unfastened?	could I have been unfastening? could you have been unfastening? could she have been unfastening? could we have been unfastening? could you have been unfastening? could they have been unfastening?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not unfasten? could you not unfasten? could she not unfasten? could we not unfasten? could you not unfasten? could they not unfasten?	could I not be unfastening? could you not be unfastening? could she not be unfastening? could we not be unfastening? could you not be unfastening? could they not be unfastening?
Perfeito	Perfeito com V-ing
could I not have unfastened? could you not have unfastened? could she not have unfastened? could we not have unfastened? could you not have unfastened? could they not have unfastened?	could I not have been unfastening? could you not have been unfastening? could she not have been unfastening? could we not have been unfastening? could you not have been unfastening? could they not have been unfastening?