I must rest you must rest he must rest we must rest you must rest they must rest
V-ing form
I must be resting you must be resting he must be resting we must be resting you must be resting they must be resting
Perfect
I must have rested you must have rested he must have rested we must have rested you must have rested they must have rested
V-ing perfect
I must have been resting you must have been resting he must have been resting we must have been resting you must have been resting they must have been resting
Negation
Simple form
I must not rest you must not rest he must not rest we must not rest you must not rest they must not rest
V-ing form
I must not be resting you must not be resting he must not be resting we must not be resting you must not be resting they must not be resting
Perfect
I must not have rested you must not have rested he must not have rested we must not have rested you must not have rested they must not have rested
V-ing perfect
I must not have been resting you must not have been resting he must not have been resting we must not have been resting you must not have been resting they must not have been resting
Interrogative form
Simple form
must I rest? must you rest? must he rest? must we rest? must you rest? must they rest?
V-ing form
must I be resting? must you be resting? must he be resting? must we be resting? must you be resting? must they be resting?
Perfect
must I have rested? must you have rested? must he have rested? must we have rested? must you have rested? must they have rested?
V-ing perfect
must I have been resting? must you have been resting? must he have been resting? must we have been resting? must you have been resting? must they have been resting?
Interro-negative form
Simple form
must I not rest? must you not rest? must he not rest? must we not rest? must you not rest? must they not rest?
V-ing form
must I not be resting? must you not be resting? must he not be resting? must we not be resting? must you not be resting? must they not be resting?
Perfect
must I not have rested? must you not have rested? must he not have rested? must we not have rested? must you not have rested? must they not have rested?
V-ing perfect
must I not have been resting? must you not have been resting? must he not have been resting? must we not have been resting? must you not have been resting? must they not have been resting?