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 must not further
you must not further
he must not further
we must not further
you must not further
they must not further 	I must not be furthering
you must not be furthering
he must not be furthering
we must not be furthering
you must not be furthering
they must not be furthering	I must not have furthered
you must not have furthered
he must not have furthered
we must not have furthered
you must not have furthered
they must not have furthered	I must not have been furthering
you must not have been furthering
he must not have been furthering
we must not have been furthering
you must not have been furthering
they must not 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 	
must I not further?
must you not further?
must he not further?
must we not further?
must you not further?
must they not further? 	must I not be furthering?
must you not be furthering?
must he not be furthering?
must we not be furthering?
must you not be furthering?
must they not be furthering? 	must I not have furthered?
must you not have furthered?
must he not have furthered?
must we not have furthered?
must you not have furthered?
must they not have furthered? 	must I not have been furthering?
must you not have been furthering?
must he not have been furthering?
must we not have been furthering?
must you not have been furthering?
must they not have been furthering?