must expire
Verbe régulier : expire - expired- expired
Traduction française : expirer - arriver à terme 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must expire
you must expire
she must expire
we must expire
you must expire
they must expire 	I must be expiring
you must be expiring
she must be expiring
we must be expiring
you must be expiring
they must be expiring	I must have expired
you must have expired
she must have expired
we must have expired
you must have expired
they must have expired	I must have been expiring
you must have been expiring
she must have been expiring
we must have been expiring
you must have been expiring
they must have been expiring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't expire
you mustn't expire
she mustn't expire
we mustn't expire
you mustn't expire
they mustn't expire 	I mustn't be expiring
you mustn't be expiring
she mustn't be expiring
we mustn't be expiring
you mustn't be expiring
they mustn't be expiring	I mustn't have expired
you mustn't have expired
she mustn't have expired
we mustn't have expired
you mustn't have expired
they mustn't have expired	I mustn't have been expiring
you mustn't have been expiring
she mustn't have been expiring
we mustn't have been expiring
you mustn't have been expiring
they mustn't have been expiring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I expire?
must you expire?
must she expire?
must we expire?
must you expire?
must they expire? 	must I be expiring?
must you be expiring?
must she be expiring?
must we be expiring?
must you be expiring?
must they be expiring? 	must I have expired?
must you have expired?
must she have expired?
must we have expired?
must you have expired?
must they have expired? 	must I have been expiring?
must you have been expiring?
must she have been expiring?
must we have been expiring?
must you have been expiring?
must they have been expiring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I expire?
mustn't you expire?
mustn't she expire?
mustn't we expire?
mustn't you expire?
mustn't they expire? 	mustn't I be expiring?
mustn't you be expiring?
mustn't she be expiring?
mustn't we be expiring?
mustn't you be expiring?
mustn't they be expiring? 	mustn't I have expired?
mustn't you have expired?
mustn't she have expired?
mustn't we have expired?
mustn't you have expired?
mustn't they have expired? 	mustn't I have been expiring?
mustn't you have been expiring?
mustn't she have been expiring?
mustn't we have been expiring?
mustn't you have been expiring?
mustn't they have been expiring?