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