ought to retain
Verbo regular: retain - retained- retained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I ought to retain
you ought to retain
he ought to retain
we ought to retain
you ought to retain
they ought to retain 	I ought to be retaining
you ought to be retaining
he ought to be retaining
we ought to be retaining
you ought to be retaining
they ought to be retaining	I ought to have retained
you ought to have retained
he ought to have retained
we ought to have retained
you ought to have retained
they ought to have retained	I ought to have been retaining
you ought to have been retaining
he ought to have been retaining
we ought to have been retaining
you ought to have been retaining
they ought to have been retaining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I ought not to retain
you ought not to retain
he ought not to retain
we ought not to retain
you ought not to retain
they ought not to retain 	I ought not to retaining
you ought not to retaining
he ought not to retaining
we ought not to retaining
you ought not to retaining
they ought not to retaining	I ought not to have retained
you ought not to have retained
he ought not to have retained
we ought not to have retained
you ought not to have retained
they ought not to have retained	I ought not to have been retaining
you ought not to have been retaining
he ought not to have been retaining
we ought not to have been retaining
you ought not to have been retaining
they ought not to have been retaining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
ought to I retain?
ought to you retain?
ought to he retain?
ought to we retain?
ought to you retain?
ought to they retain? 	ought to I be retaining?
ought to you be retaining?
ought to he be retaining?
ought to we be retaining?
ought to you be retaining?
ought to they be retaining? 	ought to I have retained?
ought to you have retained?
ought to he have retained?
ought to we have retained?
ought to you have retained?
ought to they have retained? 	ought to I have been retaining?
ought to you have been retaining?
ought to he have been retaining?
ought to we have been retaining?
ought to you have been retaining?
ought to they have been retaining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
ought I not to retain?
ought you not to retain?
ought he not to retain?
ought we not to retain?
ought you not to retain?
ought they not to retain? 	ought I not to be retaining?
ought you not to be retaining?
ought he not to be retaining?
ought we not to be retaining?
ought you not to be retaining?
ought they not to be retaining? 	ought I not to have retained?
ought you not to have retained?
ought he not to have retained?
ought we not to have retained?
ought you not to have retained?
ought they not to have retained? 	ought I not to have been retaining?
ought you not to have been retaining?
ought he not to have been retaining?
ought we not to have been retaining?
ought you not to have been retaining?
ought they not to have been retaining?