I ought to grind you ought to grind he ought to grind we ought to grind you ought to grind they ought to grind
V-ing form
I ought to be grinding you ought to be grinding he ought to be grinding we ought to be grinding you ought to be grinding they ought to be grinding
Perfect
I ought to have ground you ought to have ground he ought to have ground we ought to have ground you ought to have ground they ought to have ground
V-ing perfect
I ought to have been grinding you ought to have been grinding he ought to have been grinding we ought to have been grinding you ought to have been grinding they ought to have been grinding
Negation
Simple form
I ought not to grind you ought not to grind he ought not to grind we ought not to grind you ought not to grind they ought not to grind
V-ing form
I ought not to grinding you ought not to grinding he ought not to grinding we ought not to grinding you ought not to grinding they ought not to grinding
Perfect
I ought not to have ground you ought not to have ground he ought not to have ground we ought not to have ground you ought not to have ground they ought not to have ground
V-ing perfect
I ought not to have been grinding you ought not to have been grinding he ought not to have been grinding we ought not to have been grinding you ought not to have been grinding they ought not to have been grinding
Interrogative form
Simple form
ought to I grind? ought to you grind? ought to he grind? ought to we grind? ought to you grind? ought to they grind?
V-ing form
ought to I be grinding? ought to you be grinding? ought to he be grinding? ought to we be grinding? ought to you be grinding? ought to they be grinding?
Perfect
ought to I have ground? ought to you have ground? ought to he have ground? ought to we have ground? ought to you have ground? ought to they have ground?
V-ing perfect
ought to I have been grinding? ought to you have been grinding? ought to he have been grinding? ought to we have been grinding? ought to you have been grinding? ought to they have been grinding?
Interro-negative form
Simple form
ought I not to grind? ought you not to grind? ought he not to grind? ought we not to grind? ought you not to grind? ought they not to grind?
V-ing form
ought I not to be grinding? ought you not to be grinding? ought he not to be grinding? ought we not to be grinding? ought you not to be grinding? ought they not to be grinding?
Perfect
ought I not to have ground? ought you not to have ground? ought he not to have ground? ought we not to have ground? ought you not to have ground? ought they not to have ground?
V-ing perfect
ought I not to have been grinding? ought you not to have been grinding? ought he not to have been grinding? ought we not to have been grinding? ought you not to have been grinding? ought they not to have been grinding?