I ought to scratch you ought to scratch she ought to scratch we ought to scratch you ought to scratch they ought to scratch
V-ing form
I ought to be scratching you ought to be scratching she ought to be scratching we ought to be scratching you ought to be scratching they ought to be scratching
Perfect
I ought to have scratched you ought to have scratched she ought to have scratched we ought to have scratched you ought to have scratched they ought to have scratched
V-ing perfect
I ought to have been scratching you ought to have been scratching she ought to have been scratching we ought to have been scratching you ought to have been scratching they ought to have been scratching
Negation
Simple form
I ought not to scratch you ought not to scratch she ought not to scratch we ought not to scratch you ought not to scratch they ought not to scratch
V-ing form
I ought not to scratching you ought not to scratching she ought not to scratching we ought not to scratching you ought not to scratching they ought not to scratching
Perfect
I ought not to have scratched you ought not to have scratched she ought not to have scratched we ought not to have scratched you ought not to have scratched they ought not to have scratched
V-ing perfect
I ought not to have been scratching you ought not to have been scratching she ought not to have been scratching we ought not to have been scratching you ought not to have been scratching they ought not to have been scratching
Interrogative form
Simple form
ought to I scratch? ought to you scratch? ought to she scratch? ought to we scratch? ought to you scratch? ought to they scratch?
V-ing form
ought to I be scratching? ought to you be scratching? ought to she be scratching? ought to we be scratching? ought to you be scratching? ought to they be scratching?
Perfect
ought to I have scratched? ought to you have scratched? ought to she have scratched? ought to we have scratched? ought to you have scratched? ought to they have scratched?
V-ing perfect
ought to I have been scratching? ought to you have been scratching? ought to she have been scratching? ought to we have been scratching? ought to you have been scratching? ought to they have been scratching?
Interro-negative form
Simple form
ought I not to scratch? ought you not to scratch? ought she not to scratch? ought we not to scratch? ought you not to scratch? ought they not to scratch?
V-ing form
ought I not to be scratching? ought you not to be scratching? ought she not to be scratching? ought we not to be scratching? ought you not to be scratching? ought they not to be scratching?
Perfect
ought I not to have scratched? ought you not to have scratched? ought she not to have scratched? ought we not to have scratched? ought you not to have scratched? ought they not to have scratched?
V-ing perfect
ought I not to have been scratching? ought you not to have been scratching? ought she not to have been scratching? ought we not to have been scratching? ought you not to have been scratching? ought they not to have been scratching?