English verb conjugation
SHOULD UNDERRATE

Regular verb: underrate - underrated - underrated

Affirmation

Simple form	V-ing form
I should underrate you should underrate he should underrate we should underrate you should underrate they should underrate	I should be underrating you should be underrating he should be underrating we should be underrating you should be underrating they should be underrating
Perfect	V-ing perfect
I should have underrated you should have underrated he should have underrated we should have underrated you should have underrated they should have underrated	I should have been underrating you should have been underrating he should have been underrating we should have been underrating you should have been underrating they should have been underrating

Negation

Simple form	V-ing form
I should not underrate you should not underrate he should not underrate we should not underrate you should not underrate they should not underrate	I should not be underrating you should not be underrating he should not be underrating we should not be underrating you should not be underrating they should not be underrating
Perfect	V-ing perfect
I should not have underrated you should not have underrated he should not have underrated we should not have underrated you should not have underrated they should not have underrated	I should not have been underrating you should not have been underrating he should not have been underrating we should not have been underrating you should not have been underrating they should not have been underrating

Interrogative form

Simple form	V-ing form
should I underrate? should you underrate? should he underrate? should we underrate? should you underrate? should they underrate?	should I be underrating? should you be underrating? should he be underrating? should we be underrating? should you be underrating? should they be underrating?
Perfect	V-ing perfect
should I have underrated? should you have underrated? should he have underrated? should we have underrated? should you have underrated? should they have underrated?	should I have been underrating? should you have been underrating? should he have been underrating? should we have been underrating? should you have been underrating? should they have been underrating?

Interro-negative form

Simple form	V-ing form
should I not underrate? should you not underrate? should he not underrate? should we not underrate? should you not underrate? should they not underrate?	should I not be underrating? should you not be underrating? should he not be underrating? should we not be underrating? should you not be underrating? should they not be underrating?
Perfect	V-ing perfect
should I not have underrated? should you not have underrated? should he not have underrated? should we not have underrated? should you not have underrated? should they not have underrated?	should I not have been underrating? should you not have been underrating? should he not have been underrating? should we not have been underrating? should you not have been underrating? should they not have been underrating?