I ought to gravel you ought to gravel he ought to gravel we ought to gravel you ought to gravel they ought to gravel
V-ing form
I ought to be gravelling you ought to be gravelling he ought to be gravelling we ought to be gravelling you ought to be gravelling they ought to be gravelling
Perfect
I ought to have gravelled you ought to have gravelled he ought to have gravelled we ought to have gravelled you ought to have gravelled they ought to have gravelled
V-ing perfect
I ought to have been gravelling you ought to have been gravelling he ought to have been gravelling we ought to have been gravelling you ought to have been gravelling they ought to have been gravelling
Negation
Simple form
I oughtn't to gravel you oughtn't to gravel he oughtn't to gravel we oughtn't to gravel you oughtn't to gravel they oughtn't to gravel
V-ing form
I oughtn't to be gravelling you oughtn't to be gravelling he oughtn't to be gravelling we oughtn't to be gravelling you oughtn't to be gravelling they oughtn't to be gravelling
Perfect
I oughtn't to have gravelled you oughtn't to have gravelled he oughtn't to have gravelled we oughtn't to have gravelled you oughtn't to have gravelled they oughtn't to have gravelled
V-ing perfect
I oughtn't to have been gravelling you oughtn't to have been gravelling he oughtn't to have been gravelling we oughtn't to have been gravelling you oughtn't to have been gravelling they oughtn't to have been gravelling
Interrogative form
Simple form
ought to I gravel? ought to you gravel? ought to he gravel? ought to we gravel? ought to you gravel? ought to they gravel?
V-ing form
ought to I be gravelling? ought to you be gravelling? ought to he be gravelling? ought to we be gravelling? ought to you be gravelling? ought to they be gravelling?
Perfect
ought to I have gravelled? ought to you have gravelled? ought to he have gravelled? ought to we have gravelled? ought to you have gravelled? ought to they have gravelled?
V-ing perfect
ought to I have been gravelling? ought to you have been gravelling? ought to he have been gravelling? ought to we have been gravelling? ought to you have been gravelling? ought to they have been gravelling?
Interro-negative form
Simple form
oughtn't I to gravel? oughtn't you to gravel? oughtn't he to gravel? oughtn't we to gravel? oughtn't you to gravel? oughtn't they to gravel?
V-ing form
oughtn't I to be gravelling? oughtn't you to be gravelling? oughtn't he to be gravelling? oughtn't we to be gravelling? oughtn't you to be gravelling? oughtn't they to be gravelling?
Perfect
oughtn't I to have gravelled? oughtn't you to have gravelled? oughtn't he to have gravelled? oughtn't we to have gravelled? oughtn't you to have gravelled? oughtn't they to have gravelled?
V-ing perfect
oughtn't I to have been gravelling? oughtn't you to have been gravelling? oughtn't he to have been gravelling? oughtn't we to have been gravelling? oughtn't you to have been gravelling? oughtn't they to have been gravelling?