Conjugação do verbo inglês
COULD CORROBORATE

Verbo regular: corroborate - corroborated - corroborated

Afirmação

Forma simple	Forma com V-ing
I could corroborate you could corroborate she could corroborate we could corroborate you could corroborate they could corroborate	I could be corroborating you could be corroborating she could be corroborating we could be corroborating you could be corroborating they could be corroborating
Perfeito	Perfeito com V-ing
I could have corroborated you could have corroborated she could have corroborated we could have corroborated you could have corroborated they could have corroborated	I could have been corroborating you could have been corroborating she could have been corroborating we could have been corroborating you could have been corroborating they could have been corroborating

Negação

Forma simple	Forma com V-ing
I could not corroborate you could not corroborate she could not corroborate we could not corroborate you could not corroborate they could not corroborate	I could not be corroborating you could not be corroborating she could not be corroborating we could not be corroborating you could not be corroborating they could not be corroborating
Perfeito	Perfeito com V-ing
I could not have corroborated you could not have corroborated she could not have corroborated we could not have corroborated you could not have corroborated they could not have corroborated	I could not have been corroborating you could not have been corroborating she could not have been corroborating we could not have been corroborating you could not have been corroborating they could not have been corroborating

Forma interrogativa

Forma simple	Forma com V-ing
could I corroborate? could you corroborate? could she corroborate? could we corroborate? could you corroborate? could they corroborate?	could I be corroborating? could you be corroborating? could she be corroborating? could we be corroborating? could you be corroborating? could they be corroborating?
Perfeito	Perfeito com V-ing
could I have corroborated? could you have corroborated? could she have corroborated? could we have corroborated? could you have corroborated? could they have corroborated?	could I have been corroborating? could you have been corroborating? could she have been corroborating? could we have been corroborating? could you have been corroborating? could they have been corroborating?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not corroborate? could you not corroborate? could she not corroborate? could we not corroborate? could you not corroborate? could they not corroborate?	could I not be corroborating? could you not be corroborating? could she not be corroborating? could we not be corroborating? could you not be corroborating? could they not be corroborating?
Perfeito	Perfeito com V-ing
could I not have corroborated? could you not have corroborated? could she not have corroborated? could we not have corroborated? could you not have corroborated? could they not have corroborated?	could I not have been corroborating? could you not have been corroborating? could she not have been corroborating? could we not have been corroborating? could you not have been corroborating? could they not have been corroborating?