must prove
Verbe irrégulier : prove - proved- proven
Traduction française : prouver - s'avérer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must prove
you must prove
she must prove
we must prove
you must prove
they must prove 	I must be proving
you must be proving
she must be proving
we must be proving
you must be proving
they must be proving	I must have proven
you must have proven
she must have proven
we must have proven
you must have proven
they must have proven	I must have been proving
you must have been proving
she must have been proving
we must have been proving
you must have been proving
they must have been proving	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't prove
you mustn't prove
she mustn't prove
we mustn't prove
you mustn't prove
they mustn't prove 	I mustn't be proving
you mustn't be proving
she mustn't be proving
we mustn't be proving
you mustn't be proving
they mustn't be proving	I mustn't have proven
you mustn't have proven
she mustn't have proven
we mustn't have proven
you mustn't have proven
they mustn't have proven	I mustn't have been proving
you mustn't have been proving
she mustn't have been proving
we mustn't have been proving
you mustn't have been proving
they mustn't have been proving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I prove?
must you prove?
must she prove?
must we prove?
must you prove?
must they prove? 	must I be proving?
must you be proving?
must she be proving?
must we be proving?
must you be proving?
must they be proving? 	must I have proven?
must you have proven?
must she have proven?
must we have proven?
must you have proven?
must they have proven? 	must I have been proving?
must you have been proving?
must she have been proving?
must we have been proving?
must you have been proving?
must they have been proving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I prove?
mustn't you prove?
mustn't she prove?
mustn't we prove?
mustn't you prove?
mustn't they prove? 	mustn't I be proving?
mustn't you be proving?
mustn't she be proving?
mustn't we be proving?
mustn't you be proving?
mustn't they be proving? 	mustn't I have proven?
mustn't you have proven?
mustn't she have proven?
mustn't we have proven?
mustn't you have proven?
mustn't they have proven? 	mustn't I have been proving?
mustn't you have been proving?
mustn't she have been proving?
mustn't we have been proving?
mustn't you have been proving?
mustn't they have been proving?