English verb conjugation
SHOULD MAJOR

Regular verb: major - majored - majored

Affirmation

Simple form	V-ing form
I'd major you'd major he'd major we'd major you'd major they'd major	I'd be majoring you'd be majoring he'd be majoring we'd be majoring you'd be majoring they'd be majoring
Perfect	V-ing perfect
I should've majored you should've majored he should've majored we should've majored you should've majored they should've majored	I should've been majoring you should've been majoring he should've been majoring we should've been majoring you should've been majoring they should've been majoring

Negation

Simple form	V-ing form
I shouldn't major you shouldn't major he shouldn't major we shouldn't major you shouldn't major they shouldn't major	I shouldn't be majoring you shouldn't be majoring he shouldn't be majoring we shouldn't be majoring you shouldn't be majoring they shouldn't be majoring
Perfect	V-ing perfect
I shouldn't have majored you shouldn't have majored he shouldn't have majored we shouldn't have majored you shouldn't have majored they shouldn't have majored	I shouldn't have been majoring you shouldn't have been majoring he shouldn't have been majoring we shouldn't have been majoring you shouldn't have been majoring they shouldn't have been majoring

Interrogative form

Simple form	V-ing form
should I major? should you major? should he major? should we major? should you major? should they major?	should I be majoring? should you be majoring? should he be majoring? should we be majoring? should you be majoring? should they be majoring?
Perfect	V-ing perfect
should I have majored? should you have majored? should he have majored? should we have majored? should you have majored? should they have majored?	should I have been majoring? should you have been majoring? should he have been majoring? should we have been majoring? should you have been majoring? should they have been majoring?

Interro-negative form

Simple form	V-ing form
shouldn't I major? shouldn't you major? shouldn't he major? shouldn't we major? shouldn't you major? shouldn't they major?	shouldn't I be majoring? shouldn't you be majoring? shouldn't he be majoring? shouldn't we be majoring? shouldn't you be majoring? shouldn't they be majoring?
Perfect	V-ing perfect
shouldn't I have majored? shouldn't you have majored? shouldn't he have majored? shouldn't we have majored? shouldn't you have majored? shouldn't they have majored?	shouldn't I have been majoring? shouldn't you have been majoring? shouldn't he have been majoring? shouldn't we have been majoring? shouldn't you have been majoring? shouldn't they have been majoring?