English verb conjugation
CAN UPSTAGE

Regular verb: upstage - upstaged - upstaged

Affirmation

Simple form	V-ing form
I can upstage you can upstage he can upstage we can upstage you can upstage they can upstage	I can be upstaging you can be upstaging he can be upstaging we can be upstaging you can be upstaging they can be upstaging
Perfect	V-ing perfect
I can have upstaged you can have upstaged he can have upstaged we can have upstaged you can have upstaged they can have upstaged	I can have been upstaging you can have been upstaging he can have been upstaging we can have been upstaging you can have been upstaging they can have been upstaging

Negation

Simple form	V-ing form
I can't upstage you can't upstage he can't upstage we can't upstage you can't upstage they can't upstage	I can't be upstaging you can't be upstaging he can't be upstaging we can't be upstaging you can't be upstaging they can't be upstaging
Perfect	V-ing perfect
I can't have upstaged you can't have upstaged he can't have upstaged we can't have upstaged you can't have upstaged they can't have upstaged	I can't have been upstaging you can't have been upstaging he can't have been upstaging we can't have been upstaging you can't have been upstaging they can't have been upstaging

Interrogative form

Simple form	V-ing form
can I upstage? can you upstage? can he upstage? can we upstage? can you upstage? can they upstage?	can I be upstaging? can you be upstaging? can he be upstaging? can we be upstaging? can you be upstaging? can they be upstaging?
Perfect	V-ing perfect
can I have upstaged? can you have upstaged? can he have upstaged? can we have upstaged? can you have upstaged? can they have upstaged?	can I have been upstaging? can you have been upstaging? can he have been upstaging? can we have been upstaging? can you have been upstaging? can they have been upstaging?

Interro-negative form

Simple form	V-ing form
can't I upstage? can't you upstage? can't he upstage? can't we upstage? can't you upstage? can't they upstage?	can't I be upstaging? can't you be upstaging? can't he be upstaging? can't we be upstaging? can't you be upstaging? can't they be upstaging?
Perfect	V-ing perfect
can't I have upstaged? can't you have upstaged? can't he have upstaged? can't we have upstaged? can't you have upstaged? can't they have upstaged?	can't I have been upstaging? can't you have been upstaging? can't he have been upstaging? can't we have been upstaging? can't you have been upstaging? can't they have been upstaging?