I'd be interesting you'd be interesting he'd be interesting we'd be interesting you'd be interesting they'd be interesting
Perfect
I should've interested you should've interested he should've interested we should've interested you should've interested they should've interested
V-ing perfect
I should've been interesting you should've been interesting he should've been interesting we should've been interesting you should've been interesting they should've been interesting
Negation
Simple form
I shouldn't interest you shouldn't interest he shouldn't interest we shouldn't interest you shouldn't interest they shouldn't interest
V-ing form
I shouldn't be interesting you shouldn't be interesting he shouldn't be interesting we shouldn't be interesting you shouldn't be interesting they shouldn't be interesting
Perfect
I shouldn't have interested you shouldn't have interested he shouldn't have interested we shouldn't have interested you shouldn't have interested they shouldn't have interested
V-ing perfect
I shouldn't have been interesting you shouldn't have been interesting he shouldn't have been interesting we shouldn't have been interesting you shouldn't have been interesting they shouldn't have been interesting
Interrogative form
Simple form
should I interest? should you interest? should he interest? should we interest? should you interest? should they interest?
V-ing form
should I be interesting? should you be interesting? should he be interesting? should we be interesting? should you be interesting? should they be interesting?
Perfect
should I have interested? should you have interested? should he have interested? should we have interested? should you have interested? should they have interested?
V-ing perfect
should I have been interesting? should you have been interesting? should he have been interesting? should we have been interesting? should you have been interesting? should they have been interesting?
Interro-negative form
Simple form
shouldn't I interest? shouldn't you interest? shouldn't he interest? shouldn't we interest? shouldn't you interest? shouldn't they interest?
V-ing form
shouldn't I be interesting? shouldn't you be interesting? shouldn't he be interesting? shouldn't we be interesting? shouldn't you be interesting? shouldn't they be interesting?
Perfect
shouldn't I have interested? shouldn't you have interested? shouldn't he have interested? shouldn't we have interested? shouldn't you have interested? shouldn't they have interested?
V-ing perfect
shouldn't I have been interesting? shouldn't you have been interesting? shouldn't he have been interesting? shouldn't we have been interesting? shouldn't you have been interesting? shouldn't they have been interesting?