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 mustn't sacrifice you mustn't sacrifice he mustn't sacrifice we mustn't sacrifice you mustn't sacrifice they mustn't sacrifice	I mustn't be sacrificing you mustn't be sacrificing he mustn't be sacrificing we mustn't be sacrificing you mustn't be sacrificing they mustn't be sacrificing
Perfect	V-ing perfect
I mustn't have sacrificed you mustn't have sacrificed he mustn't have sacrificed we mustn't have sacrificed you mustn't have sacrificed they mustn't have sacrificed	I mustn't have been sacrificing you mustn't have been sacrificing he mustn't have been sacrificing we mustn't have been sacrificing you mustn't have been sacrificing they mustn't 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
mustn't I sacrifice? mustn't you sacrifice? mustn't he sacrifice? mustn't we sacrifice? mustn't you sacrifice? mustn't they sacrifice?	mustn't I be sacrificing? mustn't you be sacrificing? mustn't he be sacrificing? mustn't we be sacrificing? mustn't you be sacrificing? mustn't they be sacrificing?
Perfect	V-ing perfect
mustn't I have sacrificed? mustn't you have sacrificed? mustn't he have sacrificed? mustn't we have sacrificed? mustn't you have sacrificed? mustn't they have sacrificed?	mustn't I have been sacrificing? mustn't you have been sacrificing? mustn't he have been sacrificing? mustn't we have been sacrificing? mustn't you have been sacrificing? mustn't they have been sacrificing?