I must expel you must expel she must expel we must expel you must expel they must expel
V-ing form
I must be expelling you must be expelling she must be expelling we must be expelling you must be expelling they must be expelling
Perfect
I must have expelled you must have expelled she must have expelled we must have expelled you must have expelled they must have expelled
V-ing perfect
I must have been expelling you must have been expelling she must have been expelling we must have been expelling you must have been expelling they must have been expelling
Negation
Simple form
I must not expel you must not expel she must not expel we must not expel you must not expel they must not expel
V-ing form
I must not be expelling you must not be expelling she must not be expelling we must not be expelling you must not be expelling they must not be expelling
Perfect
I must not have expelled you must not have expelled she must not have expelled we must not have expelled you must not have expelled they must not have expelled
V-ing perfect
I must not have been expelling you must not have been expelling she must not have been expelling we must not have been expelling you must not have been expelling they must not have been expelling
Interrogative form
Simple form
must I expel? must you expel? must she expel? must we expel? must you expel? must they expel?
V-ing form
must I be expelling? must you be expelling? must she be expelling? must we be expelling? must you be expelling? must they be expelling?
Perfect
must I have expelled? must you have expelled? must she have expelled? must we have expelled? must you have expelled? must they have expelled?
V-ing perfect
must I have been expelling? must you have been expelling? must she have been expelling? must we have been expelling? must you have been expelling? must they have been expelling?
Interro-negative form
Simple form
must I not expel? must you not expel? must she not expel? must we not expel? must you not expel? must they not expel?
V-ing form
must I not be expelling? must you not be expelling? must she not be expelling? must we not be expelling? must you not be expelling? must they not be expelling?
Perfect
must I not have expelled? must you not have expelled? must she not have expelled? must we not have expelled? must you not have expelled? must they not have expelled?
V-ing perfect
must I not have been expelling? must you not have been expelling? must she not have been expelling? must we not have been expelling? must you not have been expelling? must they not have been expelling?