I'd be commenting you'd be commenting she'd be commenting we'd be commenting you'd be commenting they'd be commenting
Perfect
I should've commented you should've commented she should've commented we should've commented you should've commented they should've commented
V-ing perfect
I should've been commenting you should've been commenting she should've been commenting we should've been commenting you should've been commenting they should've been commenting
Negation
Simple form
I shouldn't comment you shouldn't comment she shouldn't comment we shouldn't comment you shouldn't comment they shouldn't comment
V-ing form
I shouldn't be commenting you shouldn't be commenting she shouldn't be commenting we shouldn't be commenting you shouldn't be commenting they shouldn't be commenting
Perfect
I shouldn't have commented you shouldn't have commented she shouldn't have commented we shouldn't have commented you shouldn't have commented they shouldn't have commented
V-ing perfect
I shouldn't have been commenting you shouldn't have been commenting she shouldn't have been commenting we shouldn't have been commenting you shouldn't have been commenting they shouldn't have been commenting
Interrogative form
Simple form
should I comment? should you comment? should she comment? should we comment? should you comment? should they comment?
V-ing form
should I be commenting? should you be commenting? should she be commenting? should we be commenting? should you be commenting? should they be commenting?
Perfect
should I have commented? should you have commented? should she have commented? should we have commented? should you have commented? should they have commented?
V-ing perfect
should I have been commenting? should you have been commenting? should she have been commenting? should we have been commenting? should you have been commenting? should they have been commenting?
Interro-negative form
Simple form
shouldn't I comment? shouldn't you comment? shouldn't she comment? shouldn't we comment? shouldn't you comment? shouldn't they comment?
V-ing form
shouldn't I be commenting? shouldn't you be commenting? shouldn't she be commenting? shouldn't we be commenting? shouldn't you be commenting? shouldn't they be commenting?
Perfect
shouldn't I have commented? shouldn't you have commented? shouldn't she have commented? shouldn't we have commented? shouldn't you have commented? shouldn't they have commented?
V-ing perfect
shouldn't I have been commenting? shouldn't you have been commenting? shouldn't she have been commenting? shouldn't we have been commenting? shouldn't you have been commenting? shouldn't they have been commenting?