I ought to sit you ought to sit he ought to sit we ought to sit you ought to sit they ought to sit
V-ing form
I ought to be sitting you ought to be sitting he ought to be sitting we ought to be sitting you ought to be sitting they ought to be sitting
Perfect
I ought to have sat you ought to have sat he ought to have sat we ought to have sat you ought to have sat they ought to have sat
V-ing perfect
I ought to have been sitting you ought to have been sitting he ought to have been sitting we ought to have been sitting you ought to have been sitting they ought to have been sitting
Negation
Simple form
I ought not to sit you ought not to sit he ought not to sit we ought not to sit you ought not to sit they ought not to sit
V-ing form
I ought not to sitting you ought not to sitting he ought not to sitting we ought not to sitting you ought not to sitting they ought not to sitting
Perfect
I ought not to have sat you ought not to have sat he ought not to have sat we ought not to have sat you ought not to have sat they ought not to have sat
V-ing perfect
I ought not to have been sitting you ought not to have been sitting he ought not to have been sitting we ought not to have been sitting you ought not to have been sitting they ought not to have been sitting
Interrogative form
Simple form
ought to I sit? ought to you sit? ought to he sit? ought to we sit? ought to you sit? ought to they sit?
V-ing form
ought to I be sitting? ought to you be sitting? ought to he be sitting? ought to we be sitting? ought to you be sitting? ought to they be sitting?
Perfect
ought to I have sat? ought to you have sat? ought to he have sat? ought to we have sat? ought to you have sat? ought to they have sat?
V-ing perfect
ought to I have been sitting? ought to you have been sitting? ought to he have been sitting? ought to we have been sitting? ought to you have been sitting? ought to they have been sitting?
Interro-negative form
Simple form
ought I not to sit? ought you not to sit? ought he not to sit? ought we not to sit? ought you not to sit? ought they not to sit?
V-ing form
ought I not to be sitting? ought you not to be sitting? ought he not to be sitting? ought we not to be sitting? ought you not to be sitting? ought they not to be sitting?
Perfect
ought I not to have sat? ought you not to have sat? ought he not to have sat? ought we not to have sat? ought you not to have sat? ought they not to have sat?
V-ing perfect
ought I not to have been sitting? ought you not to have been sitting? ought he not to have been sitting? ought we not to have been sitting? ought you not to have been sitting? ought they not to have been sitting?