English verb conjugation
CAN MAJOR

Regular verb: major - majored - majored

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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