English verb conjugation
SHOULD USE

Regular verb: use - used - used

Affirmation

Simple form	V-ing form
I'd use you'd use he'd use we'd use you'd use they'd use	I'd be using you'd be using he'd be using we'd be using you'd be using they'd be using
Perfect	V-ing perfect
I should've used you should've used he should've used we should've used you should've used they should've used	I should've been using you should've been using he should've been using we should've been using you should've been using they should've been using

Negation

Simple form	V-ing form
I shouldn't use you shouldn't use he shouldn't use we shouldn't use you shouldn't use they shouldn't use	I shouldn't be using you shouldn't be using he shouldn't be using we shouldn't be using you shouldn't be using they shouldn't be using
Perfect	V-ing perfect
I shouldn't have used you shouldn't have used he shouldn't have used we shouldn't have used you shouldn't have used they shouldn't have used	I shouldn't have been using you shouldn't have been using he shouldn't have been using we shouldn't have been using you shouldn't have been using they shouldn't have been using

Interrogative form

Simple form	V-ing form
should I use? should you use? should he use? should we use? should you use? should they use?	should I be using? should you be using? should he be using? should we be using? should you be using? should they be using?
Perfect	V-ing perfect
should I have used? should you have used? should he have used? should we have used? should you have used? should they have used?	should I have been using? should you have been using? should he have been using? should we have been using? should you have been using? should they have been using?

Interro-negative form

Simple form	V-ing form
shouldn't I use? shouldn't you use? shouldn't he use? shouldn't we use? shouldn't you use? shouldn't they use?	shouldn't I be using? shouldn't you be using? shouldn't he be using? shouldn't we be using? shouldn't you be using? shouldn't they be using?
Perfect	V-ing perfect
shouldn't I have used? shouldn't you have used? shouldn't he have used? shouldn't we have used? shouldn't you have used? shouldn't they have used?	shouldn't I have been using? shouldn't you have been using? shouldn't he have been using? shouldn't we have been using? shouldn't you have been using? shouldn't they have been using?