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