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