may grimace
Verbo regular: grimace - grimaced- grimaced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may grimace
you may grimace
he may grimace
we may grimace
you may grimace
they may grimace 	I may be grimacing
you may be grimacing
he may be grimacing
we may be grimacing
you may be grimacing
they may be grimacing	I may have grimaced
you may have grimaced
he may have grimaced
we may have grimaced
you may have grimaced
they may have grimaced	I may have been grimacing
you may have been grimacing
he may have been grimacing
we may have been grimacing
you may have been grimacing
they may have been grimacing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mayn't grimace
you mayn't grimace
he mayn't grimace
we mayn't grimace
you mayn't grimace
they mayn't grimace 	I mayn't be grimacing
you mayn't be grimacing
he mayn't be grimacing
we mayn't be grimacing
you mayn't be grimacing
they mayn't be grimacing	I mayn't have grimaced
you mayn't have grimaced
he mayn't have grimaced
we mayn't have grimaced
you mayn't have grimaced
they mayn't have grimaced	I mayn't have been grimacing
you mayn't have been grimacing
he mayn't have been grimacing
we mayn't have been grimacing
you mayn't have been grimacing
they mayn't have been grimacing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I grimace?
may you grimace?
may he grimace?
may we grimace?
may you grimace?
may they grimace? 	may I be grimacing?
may you be grimacing?
may he be grimacing?
may we be grimacing?
may you be grimacing?
may they be grimacing? 	may I have grimaced?
may you have grimaced?
may he have grimaced?
may we have grimaced?
may you have grimaced?
may they have grimaced? 	may I have been grimacing?
may you have been grimacing?
may he have been grimacing?
may we have been grimacing?
may you have been grimacing?
may they have been grimacing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mayn't I grimace?
mayn't you grimace?
mayn't he grimace?
mayn't we grimace?
mayn't you grimace?
mayn't they grimace? 	mayn't I be grimacing?
mayn't you be grimacing?
mayn't he be grimacing?
mayn't we be grimacing?
mayn't you be grimacing?
mayn't they be grimacing? 	mayn't I have grimaced?
mayn't you have grimaced?
mayn't he have grimaced?
mayn't we have grimaced?
mayn't you have grimaced?
mayn't they have grimaced? 	mayn't I have been grimacing?
mayn't you have been grimacing?
mayn't he have been grimacing?
mayn't we have been grimacing?
mayn't you have been grimacing?
mayn't they have been grimacing?