English verb conjugation
MUST INTRODUCE

Regular verb: introduce - introduced - introduced

Affirmation

Simple form	V-ing form
I must introduce you must introduce he must introduce we must introduce you must introduce they must introduce	I must be introducing you must be introducing he must be introducing we must be introducing you must be introducing they must be introducing
Perfect	V-ing perfect
I must have introduced you must have introduced he must have introduced we must have introduced you must have introduced they must have introduced	I must have been introducing you must have been introducing he must have been introducing we must have been introducing you must have been introducing they must have been introducing

Negation

Simple form	V-ing form
I must not introduce you must not introduce he must not introduce we must not introduce you must not introduce they must not introduce	I must not be introducing you must not be introducing he must not be introducing we must not be introducing you must not be introducing they must not be introducing
Perfect	V-ing perfect
I must not have introduced you must not have introduced he must not have introduced we must not have introduced you must not have introduced they must not have introduced	I must not have been introducing you must not have been introducing he must not have been introducing we must not have been introducing you must not have been introducing they must not have been introducing

Interrogative form

Simple form	V-ing form
must I introduce? must you introduce? must he introduce? must we introduce? must you introduce? must they introduce?	must I be introducing? must you be introducing? must he be introducing? must we be introducing? must you be introducing? must they be introducing?
Perfect	V-ing perfect
must I have introduced? must you have introduced? must he have introduced? must we have introduced? must you have introduced? must they have introduced?	must I have been introducing? must you have been introducing? must he have been introducing? must we have been introducing? must you have been introducing? must they have been introducing?

Interro-negative form

Simple form	V-ing form
must I not introduce? must you not introduce? must he not introduce? must we not introduce? must you not introduce? must they not introduce?	must I not be introducing? must you not be introducing? must he not be introducing? must we not be introducing? must you not be introducing? must they not be introducing?
Perfect	V-ing perfect
must I not have introduced? must you not have introduced? must he not have introduced? must we not have introduced? must you not have introduced? must they not have introduced?	must I not have been introducing? must you not have been introducing? must he not have been introducing? must we not have been introducing? must you not have been introducing? must they not have been introducing?