may weaken
Verbo regular: weaken - weakened- weakened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may weaken
you may weaken
she may weaken
we may weaken
you may weaken
they may weaken 	I may be weakening
you may be weakening
she may be weakening
we may be weakening
you may be weakening
they may be weakening	I may have weakened
you may have weakened
she may have weakened
we may have weakened
you may have weakened
they may have weakened	I may have been weakening
you may have been weakening
she may have been weakening
we may have been weakening
you may have been weakening
they may have been weakening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not weaken
you may not weaken
she may not weaken
we may not weaken
you may not weaken
they may not weaken 	I may not be weakening
you may not be weakening
she may not be weakening
we may not be weakening
you may not be weakening
they may not be weakening	I may not have weakened
you may not have weakened
she may not have weakened
we may not have weakened
you may not have weakened
they may not have weakened	I may not have been weakening
you may not have been weakening
she may not have been weakening
we may not have been weakening
you may not have been weakening
they may not have been weakening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I weaken?
may you weaken?
may she weaken?
may we weaken?
may you weaken?
may they weaken? 	may I be weakening?
may you be weakening?
may she be weakening?
may we be weakening?
may you be weakening?
may they be weakening? 	may I have weakened?
may you have weakened?
may she have weakened?
may we have weakened?
may you have weakened?
may they have weakened? 	may I have been weakening?
may you have been weakening?
may she have been weakening?
may we have been weakening?
may you have been weakening?
may they have been weakening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not weaken?
may you not weaken?
may she not weaken?
may we not weaken?
may you not weaken?
may they not weaken? 	may I not be weakening?
may you not be weakening?
may she not be weakening?
may we not be weakening?
may you not be weakening?
may they not be weakening? 	may I not have weakened?
may you not have weakened?
may she not have weakened?
may we not have weakened?
may you not have weakened?
may they not have weakened? 	may I not have been weakening?
may you not have been weakening?
may she not have been weakening?
may we not have been weakening?
may you not have been weakening?
may they not have been weakening?