may knife
Verbo regular: knife - knifed- knifed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may knife
you may knife
he may knife
we may knife
you may knife
they may knife 	I may be knifing
you may be knifing
he may be knifing
we may be knifing
you may be knifing
they may be knifing	I may have knifed
you may have knifed
he may have knifed
we may have knifed
you may have knifed
they may have knifed	I may have been knifing
you may have been knifing
he may have been knifing
we may have been knifing
you may have been knifing
they may have been knifing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mayn't knife
you mayn't knife
he mayn't knife
we mayn't knife
you mayn't knife
they mayn't knife 	I mayn't be knifing
you mayn't be knifing
he mayn't be knifing
we mayn't be knifing
you mayn't be knifing
they mayn't be knifing	I mayn't have knifed
you mayn't have knifed
he mayn't have knifed
we mayn't have knifed
you mayn't have knifed
they mayn't have knifed	I mayn't have been knifing
you mayn't have been knifing
he mayn't have been knifing
we mayn't have been knifing
you mayn't have been knifing
they mayn't have been knifing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I knife?
may you knife?
may he knife?
may we knife?
may you knife?
may they knife? 	may I be knifing?
may you be knifing?
may he be knifing?
may we be knifing?
may you be knifing?
may they be knifing? 	may I have knifed?
may you have knifed?
may he have knifed?
may we have knifed?
may you have knifed?
may they have knifed? 	may I have been knifing?
may you have been knifing?
may he have been knifing?
may we have been knifing?
may you have been knifing?
may they have been knifing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mayn't I knife?
mayn't you knife?
mayn't he knife?
mayn't we knife?
mayn't you knife?
mayn't they knife? 	mayn't I be knifing?
mayn't you be knifing?
mayn't he be knifing?
mayn't we be knifing?
mayn't you be knifing?
mayn't they be knifing? 	mayn't I have knifed?
mayn't you have knifed?
mayn't he have knifed?
mayn't we have knifed?
mayn't you have knifed?
mayn't they have knifed? 	mayn't I have been knifing?
mayn't you have been knifing?
mayn't he have been knifing?
mayn't we have been knifing?
mayn't you have been knifing?
mayn't they have been knifing?