English verb conjugation
SHOULD THREATEN

Regular verb: threaten - threatened - threatened

Affirmation

Simple form	V-ing form
I should threaten you should threaten he should threaten we should threaten you should threaten they should threaten	I should be threatening you should be threatening he should be threatening we should be threatening you should be threatening they should be threatening
Perfect	V-ing perfect
I should have threatened you should have threatened he should have threatened we should have threatened you should have threatened they should have threatened	I should have been threatening you should have been threatening he should have been threatening we should have been threatening you should have been threatening they should have been threatening

Negation

Simple form	V-ing form
I should not threaten you should not threaten he should not threaten we should not threaten you should not threaten they should not threaten	I should not be threatening you should not be threatening he should not be threatening we should not be threatening you should not be threatening they should not be threatening
Perfect	V-ing perfect
I should not have threatened you should not have threatened he should not have threatened we should not have threatened you should not have threatened they should not have threatened	I should not have been threatening you should not have been threatening he should not have been threatening we should not have been threatening you should not have been threatening they should not have been threatening

Interrogative form

Simple form	V-ing form
should I threaten? should you threaten? should he threaten? should we threaten? should you threaten? should they threaten?	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	V-ing 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?	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	V-ing form
should I not threaten? should you not threaten? should he not threaten? should we not threaten? should you not threaten? should they not threaten?	should I not be threatening? should you not be threatening? should he not be threatening? should we not be threatening? should you not be threatening? should they not be threatening?
Perfect	V-ing perfect
should I not have threatened? should you not have threatened? should he not have threatened? should we not have threatened? should you not have threatened? should they not have threatened?	should I not have been threatening? should you not have been threatening? should he not have been threatening? should we not have been threatening? should you not have been threatening? should they not have been threatening?