could tow
Verbo regular: tow - towed- towed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could tow
you could tow
she could tow
we could tow
you could tow
they could tow 	I could be towing
you could be towing
she could be towing
we could be towing
you could be towing
they could be towing	I could have towed
you could have towed
she could have towed
we could have towed
you could have towed
they could have towed	I could have been towing
you could have been towing
she could have been towing
we could have been towing
you could have been towing
they could have been towing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not tow
you could not tow
she could not tow
we could not tow
you could not tow
they could not tow 	I could not be towing
you could not be towing
she could not be towing
we could not be towing
you could not be towing
they could not be towing	I could not have towed
you could not have towed
she could not have towed
we could not have towed
you could not have towed
they could not have towed	I could not have been towing
you could not have been towing
she could not have been towing
we could not have been towing
you could not have been towing
they could not have been towing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I tow?
could you tow?
could she tow?
could we tow?
could you tow?
could they tow? 	could I be towing?
could you be towing?
could she be towing?
could we be towing?
could you be towing?
could they be towing? 	could I have towed?
could you have towed?
could she have towed?
could we have towed?
could you have towed?
could they have towed? 	could I have been towing?
could you have been towing?
could she have been towing?
could we have been towing?
could you have been towing?
could they have been towing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not tow?
could you not tow?
could she not tow?
could we not tow?
could you not tow?
could they not tow? 	could I not be towing?
could you not be towing?
could she not be towing?
could we not be towing?
could you not be towing?
could they not be towing? 	could I not have towed?
could you not have towed?
could she not have towed?
could we not have towed?
could you not have towed?
could they not have towed? 	could I not have been towing?
could you not have been towing?
could she not have been towing?
could we not have been towing?
could you not have been towing?
could they not have been towing?