English verb conjugation
OUGHT TO MASTER

Regular verb: master - mastered - mastered

Affirmation

Simple form	V-ing form
I ought to master you ought to master he 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 he ought to be mastering we ought to be mastering you ought to be mastering they ought to be mastering
Perfect	V-ing perfect
I ought to have mastered you ought to have mastered he 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 he ought to have been mastering we ought to have been mastering you ought to have been mastering they ought to have been mastering

Negation

Simple form	V-ing form
I oughtn't to master you oughtn't to master he oughtn't to master we oughtn't to master you oughtn't to master they oughtn't to master	I oughtn't to be mastering you oughtn't to be mastering he oughtn't to be mastering we oughtn't to be mastering you oughtn't to be mastering they oughtn't to be mastering
Perfect	V-ing perfect
I oughtn't to have mastered you oughtn't to have mastered he oughtn't to have mastered we oughtn't to have mastered you oughtn't to have mastered they oughtn't to have mastered	I oughtn't to have been mastering you oughtn't to have been mastering he oughtn't to have been mastering we oughtn't to have been mastering you oughtn't to have been mastering they oughtn't to have been mastering

Interrogative form

Simple form	V-ing form
ought to I master? ought to you master? ought to he 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 he be mastering? ought to we be mastering? ought to you be mastering? ought to they be mastering?
Perfect	V-ing perfect
ought to I have mastered? ought to you have mastered? ought to he 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 he have been mastering? ought to we have been mastering? ought to you have been mastering? ought to they have been mastering?

Interro-negative form

Simple form	V-ing form
oughtn't I to master? oughtn't you to master? oughtn't he to master? oughtn't we to master? oughtn't you to master? oughtn't they to master?	oughtn't I to be mastering? oughtn't you to be mastering? oughtn't he to be mastering? oughtn't we to be mastering? oughtn't you to be mastering? oughtn't they to be mastering?
Perfect	V-ing perfect
oughtn't I to have mastered? oughtn't you to have mastered? oughtn't he to have mastered? oughtn't we to have mastered? oughtn't you to have mastered? oughtn't they to have mastered?	oughtn't I to have been mastering? oughtn't you to have been mastering? oughtn't he to have been mastering? oughtn't we to have been mastering? oughtn't you to have been mastering? oughtn't they to have been mastering?