I should threat you should threat he should threat we should threat you should threat they should threat
V-ing form
I should be threating you should be threating he should be threating we should be threating you should be threating they should be threating
Perfect
I should have threated you should have threated he should have threated we should have threated you should have threated they should have threated
V-ing perfect
I should have been threating you should have been threating he should have been threating we should have been threating you should have been threating they should have been threating
Negation
Simple form
I should not threat you should not threat he should not threat we should not threat you should not threat they should not threat
V-ing form
I should not be threating you should not be threating he should not be threating we should not be threating you should not be threating they should not be threating
Perfect
I should not have threated you should not have threated he should not have threated we should not have threated you should not have threated they should not have threated
V-ing perfect
I should not have been threating you should not have been threating he should not have been threating we should not have been threating you should not have been threating they should not have been threating
Interrogative form
Simple form
should I threat? should you threat? should he threat? should we threat? should you threat? should they threat?
V-ing form
should I be threating? should you be threating? should he be threating? should we be threating? should you be threating? should they be threating?
Perfect
should I have threated? should you have threated? should he have threated? should we have threated? should you have threated? should they have threated?
V-ing perfect
should I have been threating? should you have been threating? should he have been threating? should we have been threating? should you have been threating? should they have been threating?
Interro-negative form
Simple form
should I not threat? should you not threat? should he not threat? should we not threat? should you not threat? should they not threat?
V-ing form
should I not be threating? should you not be threating? should he not be threating? should we not be threating? should you not be threating? should they not be threating?
Perfect
should I not have threated? should you not have threated? should he not have threated? should we not have threated? should you not have threated? should they not have threated?
V-ing perfect
should I not have been threating? should you not have been threating? should he not have been threating? should we not have been threating? should you not have been threating? should they not have been threating?