must march
Verbe régulier : march - marched- marched
Traduction française : marcher (au pas) - faire marcher au pas 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must march
you must march
he must march
we must march
you must march
they must march 	I must be marching
you must be marching
he must be marching
we must be marching
you must be marching
they must be marching	I must have marched
you must have marched
he must have marched
we must have marched
you must have marched
they must have marched	I must have been marching
you must have been marching
he must have been marching
we must have been marching
you must have been marching
they must have been marching	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't march
you mustn't march
he mustn't march
we mustn't march
you mustn't march
they mustn't march 	I mustn't be marching
you mustn't be marching
he mustn't be marching
we mustn't be marching
you mustn't be marching
they mustn't be marching	I mustn't have marched
you mustn't have marched
he mustn't have marched
we mustn't have marched
you mustn't have marched
they mustn't have marched	I mustn't have been marching
you mustn't have been marching
he mustn't have been marching
we mustn't have been marching
you mustn't have been marching
they mustn't have been marching	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I march?
must you march?
must he march?
must we march?
must you march?
must they march? 	must I be marching?
must you be marching?
must he be marching?
must we be marching?
must you be marching?
must they be marching? 	must I have marched?
must you have marched?
must he have marched?
must we have marched?
must you have marched?
must they have marched? 	must I have been marching?
must you have been marching?
must he have been marching?
must we have been marching?
must you have been marching?
must they have been marching? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I march?
mustn't you march?
mustn't he march?
mustn't we march?
mustn't you march?
mustn't they march? 	mustn't I be marching?
mustn't you be marching?
mustn't he be marching?
mustn't we be marching?
mustn't you be marching?
mustn't they be marching? 	mustn't I have marched?
mustn't you have marched?
mustn't he have marched?
mustn't we have marched?
mustn't you have marched?
mustn't they have marched? 	mustn't I have been marching?
mustn't you have been marching?
mustn't he have been marching?
mustn't we have been marching?
mustn't you have been marching?
mustn't they have been marching?