could perceive
Verbo regular: perceive - perceived- perceived

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could perceive
you could perceive
he could perceive
we could perceive
you could perceive
they could perceive 	I could be perceiving
you could be perceiving
he could be perceiving
we could be perceiving
you could be perceiving
they could be perceiving	I could have perceived
you could have perceived
he could have perceived
we could have perceived
you could have perceived
they could have perceived	I could have been perceiving
you could have been perceiving
he could have been perceiving
we could have been perceiving
you could have been perceiving
they could have been perceiving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not perceive
you could not perceive
he could not perceive
we could not perceive
you could not perceive
they could not perceive 	I could not be perceiving
you could not be perceiving
he could not be perceiving
we could not be perceiving
you could not be perceiving
they could not be perceiving	I could not have perceived
you could not have perceived
he could not have perceived
we could not have perceived
you could not have perceived
they could not have perceived	I could not have been perceiving
you could not have been perceiving
he could not have been perceiving
we could not have been perceiving
you could not have been perceiving
they could not have been perceiving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I perceive?
could you perceive?
could he perceive?
could we perceive?
could you perceive?
could they perceive? 	could I be perceiving?
could you be perceiving?
could he be perceiving?
could we be perceiving?
could you be perceiving?
could they be perceiving? 	could I have perceived?
could you have perceived?
could he have perceived?
could we have perceived?
could you have perceived?
could they have perceived? 	could I have been perceiving?
could you have been perceiving?
could he have been perceiving?
could we have been perceiving?
could you have been perceiving?
could they have been perceiving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not perceive?
could you not perceive?
could he not perceive?
could we not perceive?
could you not perceive?
could they not perceive? 	could I not be perceiving?
could you not be perceiving?
could he not be perceiving?
could we not be perceiving?
could you not be perceiving?
could they not be perceiving? 	could I not have perceived?
could you not have perceived?
could he not have perceived?
could we not have perceived?
could you not have perceived?
could they not have perceived? 	could I not have been perceiving?
could you not have been perceiving?
could he not have been perceiving?
could we not have been perceiving?
could you not have been perceiving?
could they not have been perceiving?