English verb conjugation
MUST SACRIFICE

Regular verb: sacrifice - sacrificed - sacrificed

Affirmation

Simple form	V-ing form
I must sacrifice you must sacrifice he must sacrifice we must sacrifice you must sacrifice they must sacrifice	I must be sacrificing you must be sacrificing he must be sacrificing we must be sacrificing you must be sacrificing they must be sacrificing
Perfect	V-ing perfect
I must have sacrificed you must have sacrificed he must have sacrificed we must have sacrificed you must have sacrificed they must have sacrificed	I must have been sacrificing you must have been sacrificing he must have been sacrificing we must have been sacrificing you must have been sacrificing they must have been sacrificing

Negation

Simple form	V-ing form
I must not sacrifice you must not sacrifice he must not sacrifice we must not sacrifice you must not sacrifice they must not sacrifice	I must not be sacrificing you must not be sacrificing he must not be sacrificing we must not be sacrificing you must not be sacrificing they must not be sacrificing
Perfect	V-ing perfect
I must not have sacrificed you must not have sacrificed he must not have sacrificed we must not have sacrificed you must not have sacrificed they must not have sacrificed	I must not have been sacrificing you must not have been sacrificing he must not have been sacrificing we must not have been sacrificing you must not have been sacrificing they must not have been sacrificing

Interrogative form

Simple form	V-ing form
must I sacrifice? must you sacrifice? must he sacrifice? must we sacrifice? must you sacrifice? must they sacrifice?	must I be sacrificing? must you be sacrificing? must he be sacrificing? must we be sacrificing? must you be sacrificing? must they be sacrificing?
Perfect	V-ing perfect
must I have sacrificed? must you have sacrificed? must he have sacrificed? must we have sacrificed? must you have sacrificed? must they have sacrificed?	must I have been sacrificing? must you have been sacrificing? must he have been sacrificing? must we have been sacrificing? must you have been sacrificing? must they have been sacrificing?

Interro-negative form

Simple form	V-ing form
must I not sacrifice? must you not sacrifice? must he not sacrifice? must we not sacrifice? must you not sacrifice? must they not sacrifice?	must I not be sacrificing? must you not be sacrificing? must he not be sacrificing? must we not be sacrificing? must you not be sacrificing? must they not be sacrificing?
Perfect	V-ing perfect
must I not have sacrificed? must you not have sacrificed? must he not have sacrificed? must we not have sacrificed? must you not have sacrificed? must they not have sacrificed?	must I not have been sacrificing? must you not have been sacrificing? must he not have been sacrificing? must we not have been sacrificing? must you not have been sacrificing? must they not have been sacrificing?