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