may underheat
Verbo regular: underheat - underheated- underheated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may underheat
you may underheat
he may underheat
we may underheat
you may underheat
they may underheat 	I may be underheating
you may be underheating
he may be underheating
we may be underheating
you may be underheating
they may be underheating	I may have underheated
you may have underheated
he may have underheated
we may have underheated
you may have underheated
they may have underheated	I may have been underheating
you may have been underheating
he may have been underheating
we may have been underheating
you may have been underheating
they may have been underheating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mayn't underheat
you mayn't underheat
he mayn't underheat
we mayn't underheat
you mayn't underheat
they mayn't underheat 	I mayn't be underheating
you mayn't be underheating
he mayn't be underheating
we mayn't be underheating
you mayn't be underheating
they mayn't be underheating	I mayn't have underheated
you mayn't have underheated
he mayn't have underheated
we mayn't have underheated
you mayn't have underheated
they mayn't have underheated	I mayn't have been underheating
you mayn't have been underheating
he mayn't have been underheating
we mayn't have been underheating
you mayn't have been underheating
they mayn't have been underheating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I underheat?
may you underheat?
may he underheat?
may we underheat?
may you underheat?
may they underheat? 	may I be underheating?
may you be underheating?
may he be underheating?
may we be underheating?
may you be underheating?
may they be underheating? 	may I have underheated?
may you have underheated?
may he have underheated?
may we have underheated?
may you have underheated?
may they have underheated? 	may I have been underheating?
may you have been underheating?
may he have been underheating?
may we have been underheating?
may you have been underheating?
may they have been underheating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mayn't I underheat?
mayn't you underheat?
mayn't he underheat?
mayn't we underheat?
mayn't you underheat?
mayn't they underheat? 	mayn't I be underheating?
mayn't you be underheating?
mayn't he be underheating?
mayn't we be underheating?
mayn't you be underheating?
mayn't they be underheating? 	mayn't I have underheated?
mayn't you have underheated?
mayn't he have underheated?
mayn't we have underheated?
mayn't you have underheated?
mayn't they have underheated? 	mayn't I have been underheating?
mayn't you have been underheating?
mayn't he have been underheating?
mayn't we have been underheating?
mayn't you have been underheating?
mayn't they have been underheating?