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