shall biff
Verbo regular: biff - biffed- biffed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'll biff
you'll biff
he'll biff
we'll biff
you'll biff
they'll biff 	I'll be biffing
you'll be biffing
he'll be biffing
we'll be biffing
you'll be biffing
they'll be biffing	I'll have biffed
you'll have biffed
he'll have biffed
we'll have biffed
you'll have biffed
they'll have biffed	I'll have been biffing
you'll have been biffing
he'll have been biffing
we'll have been biffing
you'll have been biffing
they'll have been biffing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I shan't biff
you shan't biff
he shan't biff
we shan't biff
you shan't biff
they shan't biff 	I shan't be biffing
you shan't be biffing
he shan't be biffing
we shan't be biffing
you shan't be biffing
they shan't be biffing	I shan't have biffed
you shan't have biffed
he shan't have biffed
we shan't have biffed
you shan't have biffed
they shan't have biffed	I shan't have been biffing
you shan't have been biffing
he shan't have been biffing
we shan't have been biffing
you shan't have been biffing
they shan't have been biffing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shall I biff?
shall you biff?
shall he biff?
shall we biff?
shall you biff?
shall they biff? 	shall I be biffing?
shall you be biffing?
shall he be biffing?
shall we be biffing?
shall you be biffing?
shall they be biffing? 	shall I have biffed?
shall you have biffed?
shall he have biffed?
shall we have biffed?
shall you have biffed?
shall they have biffed? 	shall I have been biffing?
shall you have been biffing?
shall he have been biffing?
shall we have been biffing?
shall you have been biffing?
shall they have been biffing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
shan't I biff?
shan't you biff?
shan't he biff?
shan't we biff?
shan't you biff?
shan't they biff? 	shan't I be biffing?
shan't you be biffing?
shan't he be biffing?
shan't we be biffing?
shan't you be biffing?
shan't they be biffing? 	shan't I have biffed?
shan't you have biffed?
shan't he have biffed?
shan't we have biffed?
shan't you have biffed?
shan't they have biffed? 	shan't I have been biffing?
shan't you have been biffing?
shan't he have been biffing?
shan't we have been biffing?
shan't you have been biffing?
shan't they have been biffing?