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

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

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought not to prove
you ought not to prove
she ought not to prove
we ought not to prove
you ought not to prove
they ought not to prove 	I ought not to proving
you ought not to proving
she ought not to proving
we ought not to proving
you ought not to proving
they ought not to proving	I ought not to have proven
you ought not to have proven
she ought not to have proven
we ought not to have proven
you ought not to have proven
they ought not to have proven	I ought not to have been proving
you ought not to have been proving
she ought not to have been proving
we ought not to have been proving
you ought not to have been proving
they ought not to have been proving	

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

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought I not to prove?
ought you not to prove?
ought she not to prove?
ought we not to prove?
ought you not to prove?
ought they not to prove? 	ought I not to be proving?
ought you not to be proving?
ought she not to be proving?
ought we not to be proving?
ought you not to be proving?
ought they not to be proving? 	ought I not to have proven?
ought you not to have proven?
ought she not to have proven?
ought we not to have proven?
ought you not to have proven?
ought they not to have proven? 	ought I not to have been proving?
ought you not to have been proving?
ought she not to have been proving?
ought we not to have been proving?
ought you not to have been proving?
ought they not to have been proving?