must proffer
Verbe régulier : proffer - proffered- proffered
Traduction française : offrir - émettre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must proffer
you must proffer
he must proffer
we must proffer
you must proffer
they must proffer 	I must be proffering
you must be proffering
he must be proffering
we must be proffering
you must be proffering
they must be proffering	I must have proffered
you must have proffered
he must have proffered
we must have proffered
you must have proffered
they must have proffered	I must have been proffering
you must have been proffering
he must have been proffering
we must have been proffering
you must have been proffering
they must have been proffering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't proffer
you mustn't proffer
he mustn't proffer
we mustn't proffer
you mustn't proffer
they mustn't proffer 	I mustn't be proffering
you mustn't be proffering
he mustn't be proffering
we mustn't be proffering
you mustn't be proffering
they mustn't be proffering	I mustn't have proffered
you mustn't have proffered
he mustn't have proffered
we mustn't have proffered
you mustn't have proffered
they mustn't have proffered	I mustn't have been proffering
you mustn't have been proffering
he mustn't have been proffering
we mustn't have been proffering
you mustn't have been proffering
they mustn't have been proffering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I proffer?
must you proffer?
must he proffer?
must we proffer?
must you proffer?
must they proffer? 	must I be proffering?
must you be proffering?
must he be proffering?
must we be proffering?
must you be proffering?
must they be proffering? 	must I have proffered?
must you have proffered?
must he have proffered?
must we have proffered?
must you have proffered?
must they have proffered? 	must I have been proffering?
must you have been proffering?
must he have been proffering?
must we have been proffering?
must you have been proffering?
must they have been proffering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I proffer?
mustn't you proffer?
mustn't he proffer?
mustn't we proffer?
mustn't you proffer?
mustn't they proffer? 	mustn't I be proffering?
mustn't you be proffering?
mustn't he be proffering?
mustn't we be proffering?
mustn't you be proffering?
mustn't they be proffering? 	mustn't I have proffered?
mustn't you have proffered?
mustn't he have proffered?
mustn't we have proffered?
mustn't you have proffered?
mustn't they have proffered? 	mustn't I have been proffering?
mustn't you have been proffering?
mustn't he have been proffering?
mustn't we have been proffering?
mustn't you have been proffering?
mustn't they have been proffering?