English verb conjugation
MUST THREAT

Regular verb: threat - threated - threated

Affirmation

Simple form	V-ing form
I must threat you must threat she must threat we must threat you must threat they must threat	I must be threating you must be threating she must be threating we must be threating you must be threating they must be threating
Perfect	V-ing perfect
I must have threated you must have threated she must have threated we must have threated you must have threated they must have threated	I must have been threating you must have been threating she must have been threating we must have been threating you must have been threating they must have been threating

Negation

Simple form	V-ing form
I must not threat you must not threat she must not threat we must not threat you must not threat they must not threat	I must not be threating you must not be threating she must not be threating we must not be threating you must not be threating they must not be threating
Perfect	V-ing perfect
I must not have threated you must not have threated she must not have threated we must not have threated you must not have threated they must not have threated	I must not have been threating you must not have been threating she must not have been threating we must not have been threating you must not have been threating they must not have been threating

Interrogative form

Simple form	V-ing form
must I threat? must you threat? must she threat? must we threat? must you threat? must they threat?	must I be threating? must you be threating? must she be threating? must we be threating? must you be threating? must they be threating?
Perfect	V-ing perfect
must I have threated? must you have threated? must she have threated? must we have threated? must you have threated? must they have threated?	must I have been threating? must you have been threating? must she have been threating? must we have been threating? must you have been threating? must they have been threating?

Interro-negative form

Simple form	V-ing form
must I not threat? must you not threat? must she not threat? must we not threat? must you not threat? must they not threat?	must I not be threating? must you not be threating? must she not be threating? must we not be threating? must you not be threating? must they not be threating?
Perfect	V-ing perfect
must I not have threated? must you not have threated? must she not have threated? must we not have threated? must you not have threated? must they not have threated?	must I not have been threating? must you not have been threating? must she not have been threating? must we not have been threating? must you not have been threating? must they not have been threating?