ought to perceive
Verbo regular: perceive - perceived- perceived

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

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

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

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