must fight
Verbo irregular: fight - fought- fought

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't fight
you mustn't fight
he mustn't fight
we mustn't fight
you mustn't fight
they mustn't fight 	I mustn't be fighting
you mustn't be fighting
he mustn't be fighting
we mustn't be fighting
you mustn't be fighting
they mustn't be fighting	I mustn't have fought
you mustn't have fought
he mustn't have fought
we mustn't have fought
you mustn't have fought
they mustn't have fought	I mustn't have been fighting
you mustn't have been fighting
he mustn't have been fighting
we mustn't have been fighting
you mustn't have been fighting
they mustn't have been fighting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I fight?
mustn't you fight?
mustn't he fight?
mustn't we fight?
mustn't you fight?
mustn't they fight? 	mustn't I be fighting?
mustn't you be fighting?
mustn't he be fighting?
mustn't we be fighting?
mustn't you be fighting?
mustn't they be fighting? 	mustn't I have fought?
mustn't you have fought?
mustn't he have fought?
mustn't we have fought?
mustn't you have fought?
mustn't they have fought? 	mustn't I have been fighting?
mustn't you have been fighting?
mustn't he have been fighting?
mustn't we have been fighting?
mustn't you have been fighting?
mustn't they have been fighting?