could guard
Verbo regular: guard - guarded- guarded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could guard
you could guard
he could guard
we could guard
you could guard
they could guard 	I could be guarding
you could be guarding
he could be guarding
we could be guarding
you could be guarding
they could be guarding	I could have guarded
you could have guarded
he could have guarded
we could have guarded
you could have guarded
they could have guarded	I could have been guarding
you could have been guarding
he could have been guarding
we could have been guarding
you could have been guarding
they could have been guarding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not guard
you could not guard
he could not guard
we could not guard
you could not guard
they could not guard 	I could not be guarding
you could not be guarding
he could not be guarding
we could not be guarding
you could not be guarding
they could not be guarding	I could not have guarded
you could not have guarded
he could not have guarded
we could not have guarded
you could not have guarded
they could not have guarded	I could not have been guarding
you could not have been guarding
he could not have been guarding
we could not have been guarding
you could not have been guarding
they could not have been guarding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I guard?
could you guard?
could he guard?
could we guard?
could you guard?
could they guard? 	could I be guarding?
could you be guarding?
could he be guarding?
could we be guarding?
could you be guarding?
could they be guarding? 	could I have guarded?
could you have guarded?
could he have guarded?
could we have guarded?
could you have guarded?
could they have guarded? 	could I have been guarding?
could you have been guarding?
could he have been guarding?
could we have been guarding?
could you have been guarding?
could they have been guarding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not guard?
could you not guard?
could he not guard?
could we not guard?
could you not guard?
could they not guard? 	could I not be guarding?
could you not be guarding?
could he not be guarding?
could we not be guarding?
could you not be guarding?
could they not be guarding? 	could I not have guarded?
could you not have guarded?
could he not have guarded?
could we not have guarded?
could you not have guarded?
could they not have guarded? 	could I not have been guarding?
could you not have been guarding?
could he not have been guarding?
could we not have been guarding?
could you not have been guarding?
could they not have been guarding?