could heat
Verbo regular: heat - heated- heated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could heat
you could heat
she could heat
we could heat
you could heat
they could heat 	I could be heating
you could be heating
she could be heating
we could be heating
you could be heating
they could be heating	I could have heated
you could have heated
she could have heated
we could have heated
you could have heated
they could have heated	I could have been heating
you could have been heating
she could have been heating
we could have been heating
you could have been heating
they could have been heating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could not heat
you could not heat
she could not heat
we could not heat
you could not heat
they could not heat 	I could not be heating
you could not be heating
she could not be heating
we could not be heating
you could not be heating
they could not be heating	I could not have heated
you could not have heated
she could not have heated
we could not have heated
you could not have heated
they could not have heated	I could not have been heating
you could not have been heating
she could not have been heating
we could not have been heating
you could not have been heating
they could not have been heating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I heat?
could you heat?
could she heat?
could we heat?
could you heat?
could they heat? 	could I be heating?
could you be heating?
could she be heating?
could we be heating?
could you be heating?
could they be heating? 	could I have heated?
could you have heated?
could she have heated?
could we have heated?
could you have heated?
could they have heated? 	could I have been heating?
could you have been heating?
could she have been heating?
could we have been heating?
could you have been heating?
could they have been heating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I not heat?
could you not heat?
could she not heat?
could we not heat?
could you not heat?
could they not heat? 	could I not be heating?
could you not be heating?
could she not be heating?
could we not be heating?
could you not be heating?
could they not be heating? 	could I not have heated?
could you not have heated?
could she not have heated?
could we not have heated?
could you not have heated?
could they not have heated? 	could I not have been heating?
could you not have been heating?
could she not have been heating?
could we not have been heating?
could you not have been heating?
could they not have been heating?