ought to master
Verbo regular: master - mastered- mastered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to master
you ought to master
she ought to master
we ought to master
you ought to master
they ought to master 	I ought to be mastering
you ought to be mastering
she ought to be mastering
we ought to be mastering
you ought to be mastering
they ought to be mastering	I ought to have mastered
you ought to have mastered
she ought to have mastered
we ought to have mastered
you ought to have mastered
they ought to have mastered	I ought to have been mastering
you ought to have been mastering
she ought to have been mastering
we ought to have been mastering
you ought to have been mastering
they ought to have been mastering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought not to master
you ought not to master
she ought not to master
we ought not to master
you ought not to master
they ought not to master 	I ought not to mastering
you ought not to mastering
she ought not to mastering
we ought not to mastering
you ought not to mastering
they ought not to mastering	I ought not to have mastered
you ought not to have mastered
she ought not to have mastered
we ought not to have mastered
you ought not to have mastered
they ought not to have mastered	I ought not to have been mastering
you ought not to have been mastering
she ought not to have been mastering
we ought not to have been mastering
you ought not to have been mastering
they ought not to have been mastering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I master?
ought to you master?
ought to she master?
ought to we master?
ought to you master?
ought to they master? 	ought to I be mastering?
ought to you be mastering?
ought to she be mastering?
ought to we be mastering?
ought to you be mastering?
ought to they be mastering? 	ought to I have mastered?
ought to you have mastered?
ought to she have mastered?
ought to we have mastered?
ought to you have mastered?
ought to they have mastered? 	ought to I have been mastering?
ought to you have been mastering?
ought to she have been mastering?
ought to we have been mastering?
ought to you have been mastering?
ought to they have been mastering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought I not to master?
ought you not to master?
ought she not to master?
ought we not to master?
ought you not to master?
ought they not to master? 	ought I not to be mastering?
ought you not to be mastering?
ought she not to be mastering?
ought we not to be mastering?
ought you not to be mastering?
ought they not to be mastering? 	ought I not to have mastered?
ought you not to have mastered?
ought she not to have mastered?
ought we not to have mastered?
ought you not to have mastered?
ought they not to have mastered? 	ought I not to have been mastering?
ought you not to have been mastering?
ought she not to have been mastering?
ought we not to have been mastering?
ought you not to have been mastering?
ought they not to have been mastering?