may biff
Verbo regular: biff - biffed- biffed

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

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

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

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