English verb conjugation
SHOULD REFRAIN

Regular verb: refrain - refrained - refrained

Affirmation

Simple form	V-ing form
I'd refrain you'd refrain he'd refrain we'd refrain you'd refrain they'd refrain	I'd be refraining you'd be refraining he'd be refraining we'd be refraining you'd be refraining they'd be refraining
Perfect	V-ing perfect
I should've refrained you should've refrained he should've refrained we should've refrained you should've refrained they should've refrained	I should've been refraining you should've been refraining he should've been refraining we should've been refraining you should've been refraining they should've been refraining

Negation

Simple form	V-ing form
I shouldn't refrain you shouldn't refrain he shouldn't refrain we shouldn't refrain you shouldn't refrain they shouldn't refrain	I shouldn't be refraining you shouldn't be refraining he shouldn't be refraining we shouldn't be refraining you shouldn't be refraining they shouldn't be refraining
Perfect	V-ing perfect
I shouldn't have refrained you shouldn't have refrained he shouldn't have refrained we shouldn't have refrained you shouldn't have refrained they shouldn't have refrained	I shouldn't have been refraining you shouldn't have been refraining he shouldn't have been refraining we shouldn't have been refraining you shouldn't have been refraining they shouldn't have been refraining

Interrogative form

Simple form	V-ing form
should I refrain? should you refrain? should he refrain? should we refrain? should you refrain? should they refrain?	should I be refraining? should you be refraining? should he be refraining? should we be refraining? should you be refraining? should they be refraining?
Perfect	V-ing perfect
should I have refrained? should you have refrained? should he have refrained? should we have refrained? should you have refrained? should they have refrained?	should I have been refraining? should you have been refraining? should he have been refraining? should we have been refraining? should you have been refraining? should they have been refraining?

Interro-negative form

Simple form	V-ing form
shouldn't I refrain? shouldn't you refrain? shouldn't he refrain? shouldn't we refrain? shouldn't you refrain? shouldn't they refrain?	shouldn't I be refraining? shouldn't you be refraining? shouldn't he be refraining? shouldn't we be refraining? shouldn't you be refraining? shouldn't they be refraining?
Perfect	V-ing perfect
shouldn't I have refrained? shouldn't you have refrained? shouldn't he have refrained? shouldn't we have refrained? shouldn't you have refrained? shouldn't they have refrained?	shouldn't I have been refraining? shouldn't you have been refraining? shouldn't he have been refraining? shouldn't we have been refraining? shouldn't you have been refraining? shouldn't they have been refraining?