English verb conjugation
SHOULD JOIN

Regular verb: join - joined - joined

Affirmation

Simple form	V-ing form
I'd join you'd join he'd join we'd join you'd join they'd join	I'd be joining you'd be joining he'd be joining we'd be joining you'd be joining they'd be joining
Perfect	V-ing perfect
I should've joined you should've joined he should've joined we should've joined you should've joined they should've joined	I should've been joining you should've been joining he should've been joining we should've been joining you should've been joining they should've been joining

Negation

Simple form	V-ing form
I shouldn't join you shouldn't join he shouldn't join we shouldn't join you shouldn't join they shouldn't join	I shouldn't be joining you shouldn't be joining he shouldn't be joining we shouldn't be joining you shouldn't be joining they shouldn't be joining
Perfect	V-ing perfect
I shouldn't have joined you shouldn't have joined he shouldn't have joined we shouldn't have joined you shouldn't have joined they shouldn't have joined	I shouldn't have been joining you shouldn't have been joining he shouldn't have been joining we shouldn't have been joining you shouldn't have been joining they shouldn't have been joining

Interrogative form

Simple form	V-ing form
should I join? should you join? should he join? should we join? should you join? should they join?	should I be joining? should you be joining? should he be joining? should we be joining? should you be joining? should they be joining?
Perfect	V-ing perfect
should I have joined? should you have joined? should he have joined? should we have joined? should you have joined? should they have joined?	should I have been joining? should you have been joining? should he have been joining? should we have been joining? should you have been joining? should they have been joining?

Interro-negative form

Simple form	V-ing form
shouldn't I join? shouldn't you join? shouldn't he join? shouldn't we join? shouldn't you join? shouldn't they join?	shouldn't I be joining? shouldn't you be joining? shouldn't he be joining? shouldn't we be joining? shouldn't you be joining? shouldn't they be joining?
Perfect	V-ing perfect
shouldn't I have joined? shouldn't you have joined? shouldn't he have joined? shouldn't we have joined? shouldn't you have joined? shouldn't they have joined?	shouldn't I have been joining? shouldn't you have been joining? shouldn't he have been joining? shouldn't we have been joining? shouldn't you have been joining? shouldn't they have been joining?