must sever
Verbe régulier : sever - severed- severed
Traduction française : couper - se rompre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must sever
you must sever
she must sever
we must sever
you must sever
they must sever 	I must be severing
you must be severing
she must be severing
we must be severing
you must be severing
they must be severing	I must have severed
you must have severed
she must have severed
we must have severed
you must have severed
they must have severed	I must have been severing
you must have been severing
she must have been severing
we must have been severing
you must have been severing
they must have been severing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't sever
you mustn't sever
she mustn't sever
we mustn't sever
you mustn't sever
they mustn't sever 	I mustn't be severing
you mustn't be severing
she mustn't be severing
we mustn't be severing
you mustn't be severing
they mustn't be severing	I mustn't have severed
you mustn't have severed
she mustn't have severed
we mustn't have severed
you mustn't have severed
they mustn't have severed	I mustn't have been severing
you mustn't have been severing
she mustn't have been severing
we mustn't have been severing
you mustn't have been severing
they mustn't have been severing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I sever?
must you sever?
must she sever?
must we sever?
must you sever?
must they sever? 	must I be severing?
must you be severing?
must she be severing?
must we be severing?
must you be severing?
must they be severing? 	must I have severed?
must you have severed?
must she have severed?
must we have severed?
must you have severed?
must they have severed? 	must I have been severing?
must you have been severing?
must she have been severing?
must we have been severing?
must you have been severing?
must they have been severing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I sever?
mustn't you sever?
mustn't she sever?
mustn't we sever?
mustn't you sever?
mustn't they sever? 	mustn't I be severing?
mustn't you be severing?
mustn't she be severing?
mustn't we be severing?
mustn't you be severing?
mustn't they be severing? 	mustn't I have severed?
mustn't you have severed?
mustn't she have severed?
mustn't we have severed?
mustn't you have severed?
mustn't they have severed? 	mustn't I have been severing?
mustn't you have been severing?
mustn't she have been severing?
mustn't we have been severing?
mustn't you have been severing?
mustn't they have been severing?