English verb conjugation
SHOULD DEMONSTRATE

Regular verb: demonstrate - demonstrated - demonstrated

Affirmation

Simple form	V-ing form
I'd demonstrate you'd demonstrate he'd demonstrate we'd demonstrate you'd demonstrate they'd demonstrate	I'd be demonstrating you'd be demonstrating he'd be demonstrating we'd be demonstrating you'd be demonstrating they'd be demonstrating
Perfect	V-ing perfect
I should've demonstrated you should've demonstrated he should've demonstrated we should've demonstrated you should've demonstrated they should've demonstrated	I should've been demonstrating you should've been demonstrating he should've been demonstrating we should've been demonstrating you should've been demonstrating they should've been demonstrating

Negation

Simple form	V-ing form
I shouldn't demonstrate you shouldn't demonstrate he shouldn't demonstrate we shouldn't demonstrate you shouldn't demonstrate they shouldn't demonstrate	I shouldn't be demonstrating you shouldn't be demonstrating he shouldn't be demonstrating we shouldn't be demonstrating you shouldn't be demonstrating they shouldn't be demonstrating
Perfect	V-ing perfect
I shouldn't have demonstrated you shouldn't have demonstrated he shouldn't have demonstrated we shouldn't have demonstrated you shouldn't have demonstrated they shouldn't have demonstrated	I shouldn't have been demonstrating you shouldn't have been demonstrating he shouldn't have been demonstrating we shouldn't have been demonstrating you shouldn't have been demonstrating they shouldn't have been demonstrating

Interrogative form

Simple form	V-ing form
should I demonstrate? should you demonstrate? should he demonstrate? should we demonstrate? should you demonstrate? should they demonstrate?	should I be demonstrating? should you be demonstrating? should he be demonstrating? should we be demonstrating? should you be demonstrating? should they be demonstrating?
Perfect	V-ing perfect
should I have demonstrated? should you have demonstrated? should he have demonstrated? should we have demonstrated? should you have demonstrated? should they have demonstrated?	should I have been demonstrating? should you have been demonstrating? should he have been demonstrating? should we have been demonstrating? should you have been demonstrating? should they have been demonstrating?

Interro-negative form

Simple form	V-ing form
shouldn't I demonstrate? shouldn't you demonstrate? shouldn't he demonstrate? shouldn't we demonstrate? shouldn't you demonstrate? shouldn't they demonstrate?	shouldn't I be demonstrating? shouldn't you be demonstrating? shouldn't he be demonstrating? shouldn't we be demonstrating? shouldn't you be demonstrating? shouldn't they be demonstrating?
Perfect	V-ing perfect
shouldn't I have demonstrated? shouldn't you have demonstrated? shouldn't he have demonstrated? shouldn't we have demonstrated? shouldn't you have demonstrated? shouldn't they have demonstrated?	shouldn't I have been demonstrating? shouldn't you have been demonstrating? shouldn't he have been demonstrating? shouldn't we have been demonstrating? shouldn't you have been demonstrating? shouldn't they have been demonstrating?