ought to forestall
Verbe régulier : forestall - forestalled- forestalled
Traduction française : empêcher - anticiper 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought to forestall
you ought to forestall
she ought to forestall
we ought to forestall
you ought to forestall
they ought to forestall 	I ought to be forestalling
you ought to be forestalling
she ought to be forestalling
we ought to be forestalling
you ought to be forestalling
they ought to be forestalling	I ought to have forestalled
you ought to have forestalled
she ought to have forestalled
we ought to have forestalled
you ought to have forestalled
they ought to have forestalled	I ought to have been forestalling
you ought to have been forestalling
she ought to have been forestalling
we ought to have been forestalling
you ought to have been forestalling
they ought to have been forestalling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought not to forestall
you ought not to forestall
she ought not to forestall
we ought not to forestall
you ought not to forestall
they ought not to forestall 	I ought not to forestalling
you ought not to forestalling
she ought not to forestalling
we ought not to forestalling
you ought not to forestalling
they ought not to forestalling	I ought not to have forestalled
you ought not to have forestalled
she ought not to have forestalled
we ought not to have forestalled
you ought not to have forestalled
they ought not to have forestalled	I ought not to have been forestalling
you ought not to have been forestalling
she ought not to have been forestalling
we ought not to have been forestalling
you ought not to have been forestalling
they ought not to have been forestalling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought to I forestall?
ought to you forestall?
ought to she forestall?
ought to we forestall?
ought to you forestall?
ought to they forestall? 	ought to I be forestalling?
ought to you be forestalling?
ought to she be forestalling?
ought to we be forestalling?
ought to you be forestalling?
ought to they be forestalling? 	ought to I have forestalled?
ought to you have forestalled?
ought to she have forestalled?
ought to we have forestalled?
ought to you have forestalled?
ought to they have forestalled? 	ought to I have been forestalling?
ought to you have been forestalling?
ought to she have been forestalling?
ought to we have been forestalling?
ought to you have been forestalling?
ought to they have been forestalling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought I not to forestall?
ought you not to forestall?
ought she not to forestall?
ought we not to forestall?
ought you not to forestall?
ought they not to forestall? 	ought I not to be forestalling?
ought you not to be forestalling?
ought she not to be forestalling?
ought we not to be forestalling?
ought you not to be forestalling?
ought they not to be forestalling? 	ought I not to have forestalled?
ought you not to have forestalled?
ought she not to have forestalled?
ought we not to have forestalled?
ought you not to have forestalled?
ought they not to have forestalled? 	ought I not to have been forestalling?
ought you not to have been forestalling?
ought she not to have been forestalling?
ought we not to have been forestalling?
ought you not to have been forestalling?
ought they not to have been forestalling?