English verb conjugation
MUST UNDERRATE

Regular verb: underrate - underrated - underrated

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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