English verb conjugation
SHOULD ATTEND

Regular verb: attend - attended - attended

Affirmation

Simple form	V-ing form
I'd attend you'd attend she'd attend we'd attend you'd attend they'd attend	I'd be attending you'd be attending she'd be attending we'd be attending you'd be attending they'd be attending
Perfect	V-ing perfect
I should've attended you should've attended she should've attended we should've attended you should've attended they should've attended	I should've been attending you should've been attending she should've been attending we should've been attending you should've been attending they should've been attending

Negation

Simple form	V-ing form
I shouldn't attend you shouldn't attend she shouldn't attend we shouldn't attend you shouldn't attend they shouldn't attend	I shouldn't be attending you shouldn't be attending she shouldn't be attending we shouldn't be attending you shouldn't be attending they shouldn't be attending
Perfect	V-ing perfect
I shouldn't have attended you shouldn't have attended she shouldn't have attended we shouldn't have attended you shouldn't have attended they shouldn't have attended	I shouldn't have been attending you shouldn't have been attending she shouldn't have been attending we shouldn't have been attending you shouldn't have been attending they shouldn't have been attending

Interrogative form

Simple form	V-ing form
should I attend? should you attend? should she attend? should we attend? should you attend? should they attend?	should I be attending? should you be attending? should she be attending? should we be attending? should you be attending? should they be attending?
Perfect	V-ing perfect
should I have attended? should you have attended? should she have attended? should we have attended? should you have attended? should they have attended?	should I have been attending? should you have been attending? should she have been attending? should we have been attending? should you have been attending? should they have been attending?

Interro-negative form

Simple form	V-ing form
shouldn't I attend? shouldn't you attend? shouldn't she attend? shouldn't we attend? shouldn't you attend? shouldn't they attend?	shouldn't I be attending? shouldn't you be attending? shouldn't she be attending? shouldn't we be attending? shouldn't you be attending? shouldn't they be attending?
Perfect	V-ing perfect
shouldn't I have attended? shouldn't you have attended? shouldn't she have attended? shouldn't we have attended? shouldn't you have attended? shouldn't they have attended?	shouldn't I have been attending? shouldn't you have been attending? shouldn't she have been attending? shouldn't we have been attending? shouldn't you have been attending? shouldn't they have been attending?