must fight
Verbe irrégulier : fight - fought- fought
Traduction française : combattre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must fight
you must fight
he must fight
we must fight
you must fight
they must fight 	I must be fighting
you must be fighting
he must be fighting
we must be fighting
you must be fighting
they must be fighting	I must have fought
you must have fought
he must have fought
we must have fought
you must have fought
they must have fought	I must have been fighting
you must have been fighting
he must have been fighting
we must have been fighting
you must have been fighting
they must have been fighting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not fight
you must not fight
he must not fight
we must not fight
you must not fight
they must not fight 	I must not be fighting
you must not be fighting
he must not be fighting
we must not be fighting
you must not be fighting
they must not be fighting	I must not have fought
you must not have fought
he must not have fought
we must not have fought
you must not have fought
they must not have fought	I must not have been fighting
you must not have been fighting
he must not have been fighting
we must not have been fighting
you must not have been fighting
they must not have been fighting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I fight?
must you fight?
must he fight?
must we fight?
must you fight?
must they fight? 	must I be fighting?
must you be fighting?
must he be fighting?
must we be fighting?
must you be fighting?
must they be fighting? 	must I have fought?
must you have fought?
must he have fought?
must we have fought?
must you have fought?
must they have fought? 	must I have been fighting?
must you have been fighting?
must he have been fighting?
must we have been fighting?
must you have been fighting?
must they have been fighting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not fight?
must you not fight?
must he not fight?
must we not fight?
must you not fight?
must they not fight? 	must I not be fighting?
must you not be fighting?
must he not be fighting?
must we not be fighting?
must you not be fighting?
must they not be fighting? 	must I not have fought?
must you not have fought?
must he not have fought?
must we not have fought?
must you not have fought?
must they not have fought? 	must I not have been fighting?
must you not have been fighting?
must he not have been fighting?
must we not have been fighting?
must you not have been fighting?
must they not have been fighting?