must further
Verbe régulier : further - furthered- furthered
Traduction française : avancer - servir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must further
you must further
he must further
we must further
you must further
they must further 	I must be furthering
you must be furthering
he must be furthering
we must be furthering
you must be furthering
they must be furthering	I must have furthered
you must have furthered
he must have furthered
we must have furthered
you must have furthered
they must have furthered	I must have been furthering
you must have been furthering
he must have been furthering
we must have been furthering
you must have been furthering
they must have been furthering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't further
you mustn't further
he mustn't further
we mustn't further
you mustn't further
they mustn't further 	I mustn't be furthering
you mustn't be furthering
he mustn't be furthering
we mustn't be furthering
you mustn't be furthering
they mustn't be furthering	I mustn't have furthered
you mustn't have furthered
he mustn't have furthered
we mustn't have furthered
you mustn't have furthered
they mustn't have furthered	I mustn't have been furthering
you mustn't have been furthering
he mustn't have been furthering
we mustn't have been furthering
you mustn't have been furthering
they mustn't have been furthering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I further?
must you further?
must he further?
must we further?
must you further?
must they further? 	must I be furthering?
must you be furthering?
must he be furthering?
must we be furthering?
must you be furthering?
must they be furthering? 	must I have furthered?
must you have furthered?
must he have furthered?
must we have furthered?
must you have furthered?
must they have furthered? 	must I have been furthering?
must you have been furthering?
must he have been furthering?
must we have been furthering?
must you have been furthering?
must they have been furthering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I further?
mustn't you further?
mustn't he further?
mustn't we further?
mustn't you further?
mustn't they further? 	mustn't I be furthering?
mustn't you be furthering?
mustn't he be furthering?
mustn't we be furthering?
mustn't you be furthering?
mustn't they be furthering? 	mustn't I have furthered?
mustn't you have furthered?
mustn't he have furthered?
mustn't we have furthered?
mustn't you have furthered?
mustn't they have furthered? 	mustn't I have been furthering?
mustn't you have been furthering?
mustn't he have been furthering?
mustn't we have been furthering?
mustn't you have been furthering?
mustn't they have been furthering?