may preharden
Verbo regular: preharden - prehardened- prehardened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may preharden
you may preharden
he may preharden
we may preharden
you may preharden
they may preharden 	I may be prehardening
you may be prehardening
he may be prehardening
we may be prehardening
you may be prehardening
they may be prehardening	I may have prehardened
you may have prehardened
he may have prehardened
we may have prehardened
you may have prehardened
they may have prehardened	I may have been prehardening
you may have been prehardening
he may have been prehardening
we may have been prehardening
you may have been prehardening
they may have been prehardening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mayn't preharden
you mayn't preharden
he mayn't preharden
we mayn't preharden
you mayn't preharden
they mayn't preharden 	I mayn't be prehardening
you mayn't be prehardening
he mayn't be prehardening
we mayn't be prehardening
you mayn't be prehardening
they mayn't be prehardening	I mayn't have prehardened
you mayn't have prehardened
he mayn't have prehardened
we mayn't have prehardened
you mayn't have prehardened
they mayn't have prehardened	I mayn't have been prehardening
you mayn't have been prehardening
he mayn't have been prehardening
we mayn't have been prehardening
you mayn't have been prehardening
they mayn't have been prehardening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I preharden?
may you preharden?
may he preharden?
may we preharden?
may you preharden?
may they preharden? 	may I be prehardening?
may you be prehardening?
may he be prehardening?
may we be prehardening?
may you be prehardening?
may they be prehardening? 	may I have prehardened?
may you have prehardened?
may he have prehardened?
may we have prehardened?
may you have prehardened?
may they have prehardened? 	may I have been prehardening?
may you have been prehardening?
may he have been prehardening?
may we have been prehardening?
may you have been prehardening?
may they have been prehardening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mayn't I preharden?
mayn't you preharden?
mayn't he preharden?
mayn't we preharden?
mayn't you preharden?
mayn't they preharden? 	mayn't I be prehardening?
mayn't you be prehardening?
mayn't he be prehardening?
mayn't we be prehardening?
mayn't you be prehardening?
mayn't they be prehardening? 	mayn't I have prehardened?
mayn't you have prehardened?
mayn't he have prehardened?
mayn't we have prehardened?
mayn't you have prehardened?
mayn't they have prehardened? 	mayn't I have been prehardening?
mayn't you have been prehardening?
mayn't he have been prehardening?
mayn't we have been prehardening?
mayn't you have been prehardening?
mayn't they have been prehardening?