I must holiday you must holiday he must holiday we must holiday you must holiday they must holiday
V-ing form
I must be holidaying you must be holidaying he must be holidaying we must be holidaying you must be holidaying they must be holidaying
Perfect
I must have holidayed you must have holidayed he must have holidayed we must have holidayed you must have holidayed they must have holidayed
V-ing perfect
I must have been holidaying you must have been holidaying he must have been holidaying we must have been holidaying you must have been holidaying they must have been holidaying
Negation
Simple form
I must not holiday you must not holiday he must not holiday we must not holiday you must not holiday they must not holiday
V-ing form
I must not be holidaying you must not be holidaying he must not be holidaying we must not be holidaying you must not be holidaying they must not be holidaying
Perfect
I must not have holidayed you must not have holidayed he must not have holidayed we must not have holidayed you must not have holidayed they must not have holidayed
V-ing perfect
I must not have been holidaying you must not have been holidaying he must not have been holidaying we must not have been holidaying you must not have been holidaying they must not have been holidaying
Interrogative form
Simple form
must I holiday? must you holiday? must he holiday? must we holiday? must you holiday? must they holiday?
V-ing form
must I be holidaying? must you be holidaying? must he be holidaying? must we be holidaying? must you be holidaying? must they be holidaying?
Perfect
must I have holidayed? must you have holidayed? must he have holidayed? must we have holidayed? must you have holidayed? must they have holidayed?
V-ing perfect
must I have been holidaying? must you have been holidaying? must he have been holidaying? must we have been holidaying? must you have been holidaying? must they have been holidaying?
Interro-negative form
Simple form
must I not holiday? must you not holiday? must he not holiday? must we not holiday? must you not holiday? must they not holiday?
V-ing form
must I not be holidaying? must you not be holidaying? must he not be holidaying? must we not be holidaying? must you not be holidaying? must they not be holidaying?
Perfect
must I not have holidayed? must you not have holidayed? must he not have holidayed? must we not have holidayed? must you not have holidayed? must they not have holidayed?
V-ing perfect
must I not have been holidaying? must you not have been holidaying? must he not have been holidaying? must we not have been holidaying? must you not have been holidaying? must they not have been holidaying?