could swear
Verbo irregular: swear - swore- sworn

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could swear
you could swear
she could swear
we could swear
you could swear
they could swear 	I could be swearing
you could be swearing
she could be swearing
we could be swearing
you could be swearing
they could be swearing	I could have sworn
you could have sworn
she could have sworn
we could have sworn
you could have sworn
they could have sworn	I could have been swearing
you could have been swearing
she could have been swearing
we could have been swearing
you could have been swearing
they could have been swearing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not swear
you could not swear
she could not swear
we could not swear
you could not swear
they could not swear 	I could not be swearing
you could not be swearing
she could not be swearing
we could not be swearing
you could not be swearing
they could not be swearing	I could not have sworn
you could not have sworn
she could not have sworn
we could not have sworn
you could not have sworn
they could not have sworn	I could not have been swearing
you could not have been swearing
she could not have been swearing
we could not have been swearing
you could not have been swearing
they could not have been swearing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I swear?
could you swear?
could she swear?
could we swear?
could you swear?
could they swear? 	could I be swearing?
could you be swearing?
could she be swearing?
could we be swearing?
could you be swearing?
could they be swearing? 	could I have sworn?
could you have sworn?
could she have sworn?
could we have sworn?
could you have sworn?
could they have sworn? 	could I have been swearing?
could you have been swearing?
could she have been swearing?
could we have been swearing?
could you have been swearing?
could they have been swearing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not swear?
could you not swear?
could she not swear?
could we not swear?
could you not swear?
could they not swear? 	could I not be swearing?
could you not be swearing?
could she not be swearing?
could we not be swearing?
could you not be swearing?
could they not be swearing? 	could I not have sworn?
could you not have sworn?
could she not have sworn?
could we not have sworn?
could you not have sworn?
could they not have sworn? 	could I not have been swearing?
could you not have been swearing?
could she not have been swearing?
could we not have been swearing?
could you not have been swearing?
could they not have been swearing?