ought to understand
Verbo irregular: understand - understood- understood

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to understand
you ought to understand
she ought to understand
we ought to understand
you ought to understand
they ought to understand 	I ought to be understanding
you ought to be understanding
she ought to be understanding
we ought to be understanding
you ought to be understanding
they ought to be understanding	I ought to have understood
you ought to have understood
she ought to have understood
we ought to have understood
you ought to have understood
they ought to have understood	I ought to have been understanding
you ought to have been understanding
she ought to have been understanding
we ought to have been understanding
you ought to have been understanding
they ought to have been understanding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought not to understand
you ought not to understand
she ought not to understand
we ought not to understand
you ought not to understand
they ought not to understand 	I ought not to understanding
you ought not to understanding
she ought not to understanding
we ought not to understanding
you ought not to understanding
they ought not to understanding	I ought not to have understood
you ought not to have understood
she ought not to have understood
we ought not to have understood
you ought not to have understood
they ought not to have understood	I ought not to have been understanding
you ought not to have been understanding
she ought not to have been understanding
we ought not to have been understanding
you ought not to have been understanding
they ought not to have been understanding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I understand?
ought to you understand?
ought to she understand?
ought to we understand?
ought to you understand?
ought to they understand? 	ought to I be understanding?
ought to you be understanding?
ought to she be understanding?
ought to we be understanding?
ought to you be understanding?
ought to they be understanding? 	ought to I have understood?
ought to you have understood?
ought to she have understood?
ought to we have understood?
ought to you have understood?
ought to they have understood? 	ought to I have been understanding?
ought to you have been understanding?
ought to she have been understanding?
ought to we have been understanding?
ought to you have been understanding?
ought to they have been understanding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought I not to understand?
ought you not to understand?
ought she not to understand?
ought we not to understand?
ought you not to understand?
ought they not to understand? 	ought I not to be understanding?
ought you not to be understanding?
ought she not to be understanding?
ought we not to be understanding?
ought you not to be understanding?
ought they not to be understanding? 	ought I not to have understood?
ought you not to have understood?
ought she not to have understood?
ought we not to have understood?
ought you not to have understood?
ought they not to have understood? 	ought I not to have been understanding?
ought you not to have been understanding?
ought she not to have been understanding?
ought we not to have been understanding?
ought you not to have been understanding?
ought they not to have been understanding?