I must apprentice you must apprentice she must apprentice we must apprentice you must apprentice they must apprentice
V-ing form
I must be apprenticing you must be apprenticing she must be apprenticing we must be apprenticing you must be apprenticing they must be apprenticing
Perfect
I must have apprenticed you must have apprenticed she must have apprenticed we must have apprenticed you must have apprenticed they must have apprenticed
V-ing perfect
I must have been apprenticing you must have been apprenticing she must have been apprenticing we must have been apprenticing you must have been apprenticing they must have been apprenticing
Negation
Simple form
I must not apprentice you must not apprentice she must not apprentice we must not apprentice you must not apprentice they must not apprentice
V-ing form
I must not be apprenticing you must not be apprenticing she must not be apprenticing we must not be apprenticing you must not be apprenticing they must not be apprenticing
Perfect
I must not have apprenticed you must not have apprenticed she must not have apprenticed we must not have apprenticed you must not have apprenticed they must not have apprenticed
V-ing perfect
I must not have been apprenticing you must not have been apprenticing she must not have been apprenticing we must not have been apprenticing you must not have been apprenticing they must not have been apprenticing
Interrogative form
Simple form
must I apprentice? must you apprentice? must she apprentice? must we apprentice? must you apprentice? must they apprentice?
V-ing form
must I be apprenticing? must you be apprenticing? must she be apprenticing? must we be apprenticing? must you be apprenticing? must they be apprenticing?
Perfect
must I have apprenticed? must you have apprenticed? must she have apprenticed? must we have apprenticed? must you have apprenticed? must they have apprenticed?
V-ing perfect
must I have been apprenticing? must you have been apprenticing? must she have been apprenticing? must we have been apprenticing? must you have been apprenticing? must they have been apprenticing?
Interro-negative form
Simple form
must I not apprentice? must you not apprentice? must she not apprentice? must we not apprentice? must you not apprentice? must they not apprentice?
V-ing form
must I not be apprenticing? must you not be apprenticing? must she not be apprenticing? must we not be apprenticing? must you not be apprenticing? must they not be apprenticing?
Perfect
must I not have apprenticed? must you not have apprenticed? must she not have apprenticed? must we not have apprenticed? must you not have apprenticed? must they not have apprenticed?
V-ing perfect
must I not have been apprenticing? must you not have been apprenticing? must she not have been apprenticing? must we not have been apprenticing? must you not have been apprenticing? must they not have been apprenticing?