I'll hiss you'll hiss she'll hiss we'll hiss you'll hiss they'll hiss
V-ing form
I'll be hissing you'll be hissing she'll be hissing we'll be hissing you'll be hissing they'll be hissing
Perfect
I'll have hissed you'll have hissed she'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 she'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 she 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 she 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 she 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 she 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 she hiss? shall we hiss? shall you hiss? shall they hiss?
V-ing form
shall I be hissing? shall you be hissing? shall she be hissing? shall we be hissing? shall you be hissing? shall they be hissing?
Perfect
shall I have hissed? shall you have hissed? shall she 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 she 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 she 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 she 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 she 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 she have been hissing? shan't we have been hissing? shan't you have been hissing? shan't they have been hissing?