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