Conjugación del verbo inglés
COULD CONFIRM

Verbo regular: confirm - confirmed - confirmed

Afirmación

Forma simple	Forma con V-ing
I could confirm you could confirm she could confirm we could confirm you could confirm they could confirm	I could be confirming you could be confirming she could be confirming we could be confirming you could be confirming they could be confirming
Perfecto	Perfecto con V-ing
I could have confirmed you could have confirmed she could have confirmed we could have confirmed you could have confirmed they could have confirmed	I could have been confirming you could have been confirming she could have been confirming we could have been confirming you could have been confirming they could have been confirming

Negación

Forma simple	Forma con V-ing
I could not confirm you could not confirm she could not confirm we could not confirm you could not confirm they could not confirm	I could not be confirming you could not be confirming she could not be confirming we could not be confirming you could not be confirming they could not be confirming
Perfecto	Perfecto con V-ing
I could not have confirmed you could not have confirmed she could not have confirmed we could not have confirmed you could not have confirmed they could not have confirmed	I could not have been confirming you could not have been confirming she could not have been confirming we could not have been confirming you could not have been confirming they could not have been confirming

Forma interrogativa

Forma simple	Forma con V-ing
could I confirm? could you confirm? could she confirm? could we confirm? could you confirm? could they confirm?	could I be confirming? could you be confirming? could she be confirming? could we be confirming? could you be confirming? could they be confirming?
Perfecto	Perfecto con V-ing
could I have confirmed? could you have confirmed? could she have confirmed? could we have confirmed? could you have confirmed? could they have confirmed?	could I have been confirming? could you have been confirming? could she have been confirming? could we have been confirming? could you have been confirming? could they have been confirming?

Forma interro-negativa

Forma simple	Forma con V-ing
could I not confirm? could you not confirm? could she not confirm? could we not confirm? could you not confirm? could they not confirm?	could I not be confirming? could you not be confirming? could she not be confirming? could we not be confirming? could you not be confirming? could they not be confirming?
Perfecto	Perfecto con V-ing
could I not have confirmed? could you not have confirmed? could she not have confirmed? could we not have confirmed? could you not have confirmed? could they not have confirmed?	could I not have been confirming? could you not have been confirming? could she not have been confirming? could we not have been confirming? could you not have been confirming? could they not have been confirming?