may whiten
Verbo regular: whiten - whitened- whitened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may whiten
you may whiten
he may whiten
we may whiten
you may whiten
they may whiten 	I may be whitening
you may be whitening
he may be whitening
we may be whitening
you may be whitening
they may be whitening	I may have whitened
you may have whitened
he may have whitened
we may have whitened
you may have whitened
they may have whitened	I may have been whitening
you may have been whitening
he may have been whitening
we may have been whitening
you may have been whitening
they may have been whitening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not whiten
you may not whiten
he may not whiten
we may not whiten
you may not whiten
they may not whiten 	I may not be whitening
you may not be whitening
he may not be whitening
we may not be whitening
you may not be whitening
they may not be whitening	I may not have whitened
you may not have whitened
he may not have whitened
we may not have whitened
you may not have whitened
they may not have whitened	I may not have been whitening
you may not have been whitening
he may not have been whitening
we may not have been whitening
you may not have been whitening
they may not have been whitening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I whiten?
may you whiten?
may he whiten?
may we whiten?
may you whiten?
may they whiten? 	may I be whitening?
may you be whitening?
may he be whitening?
may we be whitening?
may you be whitening?
may they be whitening? 	may I have whitened?
may you have whitened?
may he have whitened?
may we have whitened?
may you have whitened?
may they have whitened? 	may I have been whitening?
may you have been whitening?
may he have been whitening?
may we have been whitening?
may you have been whitening?
may they have been whitening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not whiten?
may you not whiten?
may he not whiten?
may we not whiten?
may you not whiten?
may they not whiten? 	may I not be whitening?
may you not be whitening?
may he not be whitening?
may we not be whitening?
may you not be whitening?
may they not be whitening? 	may I not have whitened?
may you not have whitened?
may he not have whitened?
may we not have whitened?
may you not have whitened?
may they not have whitened? 	may I not have been whitening?
may you not have been whitening?
may he not have been whitening?
may we not have been whitening?
may you not have been whitening?
may they not have been whitening?