I ought to grab you ought to grab she 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 she 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 she 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 she 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 ought not to grab you ought not to grab she ought not to grab we ought not to grab you ought not to grab they ought not to grab
V-ing form
I ought not to grabbing you ought not to grabbing she ought not to grabbing we ought not to grabbing you ought not to grabbing they ought not to grabbing
Perfect
I ought not to have grabbed you ought not to have grabbed she ought not to have grabbed we ought not to have grabbed you ought not to have grabbed they ought not to have grabbed
V-ing perfect
I ought not to have been grabbing you ought not to have been grabbing she ought not to have been grabbing we ought not to have been grabbing you ought not to have been grabbing they ought not to have been grabbing
Interrogative form
Simple form
ought to I grab? ought to you grab? ought to she 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 she 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 she 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 she 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
ought I not to grab? ought you not to grab? ought she not to grab? ought we not to grab? ought you not to grab? ought they not to grab?
V-ing form
ought I not to be grabbing? ought you not to be grabbing? ought she not to be grabbing? ought we not to be grabbing? ought you not to be grabbing? ought they not to be grabbing?
Perfect
ought I not to have grabbed? ought you not to have grabbed? ought she not to have grabbed? ought we not to have grabbed? ought you not to have grabbed? ought they not to have grabbed?
V-ing perfect
ought I not to have been grabbing? ought you not to have been grabbing? ought she not to have been grabbing? ought we not to have been grabbing? ought you not to have been grabbing? ought they not to have been grabbing?