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