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