English verb conjugation
SHOULD MASTER

Regular verb: master - mastered - mastered

Affirmation

Simple form	V-ing form
I'd master you'd master he'd master we'd master you'd master they'd master	I'd be mastering you'd be mastering he'd be mastering we'd be mastering you'd be mastering they'd be mastering
Perfect	V-ing perfect
I should've mastered you should've mastered he should've mastered we should've mastered you should've mastered they should've mastered	I should've been mastering you should've been mastering he should've been mastering we should've been mastering you should've been mastering they should've been mastering

Negation

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

Interrogative form

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

Interro-negative form

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