may harden
Verbo regular: harden - hardened- hardened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may harden
you may harden
he may harden
we may harden
you may harden
they may harden 	I may be hardening
you may be hardening
he may be hardening
we may be hardening
you may be hardening
they may be hardening	I may have hardened
you may have hardened
he may have hardened
we may have hardened
you may have hardened
they may have hardened	I may have been hardening
you may have been hardening
he may have been hardening
we may have been hardening
you may have been hardening
they may have been hardening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mayn't harden
you mayn't harden
he mayn't harden
we mayn't harden
you mayn't harden
they mayn't harden 	I mayn't be hardening
you mayn't be hardening
he mayn't be hardening
we mayn't be hardening
you mayn't be hardening
they mayn't be hardening	I mayn't have hardened
you mayn't have hardened
he mayn't have hardened
we mayn't have hardened
you mayn't have hardened
they mayn't have hardened	I mayn't have been hardening
you mayn't have been hardening
he mayn't have been hardening
we mayn't have been hardening
you mayn't have been hardening
they mayn't have been hardening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I harden?
may you harden?
may he harden?
may we harden?
may you harden?
may they harden? 	may I be hardening?
may you be hardening?
may he be hardening?
may we be hardening?
may you be hardening?
may they be hardening? 	may I have hardened?
may you have hardened?
may he have hardened?
may we have hardened?
may you have hardened?
may they have hardened? 	may I have been hardening?
may you have been hardening?
may he have been hardening?
may we have been hardening?
may you have been hardening?
may they have been hardening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mayn't I harden?
mayn't you harden?
mayn't he harden?
mayn't we harden?
mayn't you harden?
mayn't they harden? 	mayn't I be hardening?
mayn't you be hardening?
mayn't he be hardening?
mayn't we be hardening?
mayn't you be hardening?
mayn't they be hardening? 	mayn't I have hardened?
mayn't you have hardened?
mayn't he have hardened?
mayn't we have hardened?
mayn't you have hardened?
mayn't they have hardened? 	mayn't I have been hardening?
mayn't you have been hardening?
mayn't he have been hardening?
mayn't we have been hardening?
mayn't you have been hardening?
mayn't they have been hardening?