ought to refer
Verbo regular: refer - referred- referred

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to refer
you ought to refer
he ought to refer
we ought to refer
you ought to refer
they ought to refer 	I ought to be referring
you ought to be referring
he ought to be referring
we ought to be referring
you ought to be referring
they ought to be referring	I ought to have referred
you ought to have referred
he ought to have referred
we ought to have referred
you ought to have referred
they ought to have referred	I ought to have been referring
you ought to have been referring
he ought to have been referring
we ought to have been referring
you ought to have been referring
they ought to have been referring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought not to refer
you ought not to refer
he ought not to refer
we ought not to refer
you ought not to refer
they ought not to refer 	I ought not to referring
you ought not to referring
he ought not to referring
we ought not to referring
you ought not to referring
they ought not to referring	I ought not to have referred
you ought not to have referred
he ought not to have referred
we ought not to have referred
you ought not to have referred
they ought not to have referred	I ought not to have been referring
you ought not to have been referring
he ought not to have been referring
we ought not to have been referring
you ought not to have been referring
they ought not to have been referring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I refer?
ought to you refer?
ought to he refer?
ought to we refer?
ought to you refer?
ought to they refer? 	ought to I be referring?
ought to you be referring?
ought to he be referring?
ought to we be referring?
ought to you be referring?
ought to they be referring? 	ought to I have referred?
ought to you have referred?
ought to he have referred?
ought to we have referred?
ought to you have referred?
ought to they have referred? 	ought to I have been referring?
ought to you have been referring?
ought to he have been referring?
ought to we have been referring?
ought to you have been referring?
ought to they have been referring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought I not to refer?
ought you not to refer?
ought he not to refer?
ought we not to refer?
ought you not to refer?
ought they not to refer? 	ought I not to be referring?
ought you not to be referring?
ought he not to be referring?
ought we not to be referring?
ought you not to be referring?
ought they not to be referring? 	ought I not to have referred?
ought you not to have referred?
ought he not to have referred?
ought we not to have referred?
ought you not to have referred?
ought they not to have referred? 	ought I not to have been referring?
ought you not to have been referring?
ought he not to have been referring?
ought we not to have been referring?
ought you not to have been referring?
ought they not to have been referring?