may slacken
Verbo regular: slacken - slackened- slackened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may slacken
you may slacken
he may slacken
we may slacken
you may slacken
they may slacken 	I may be slackening
you may be slackening
he may be slackening
we may be slackening
you may be slackening
they may be slackening	I may have slackened
you may have slackened
he may have slackened
we may have slackened
you may have slackened
they may have slackened	I may have been slackening
you may have been slackening
he may have been slackening
we may have been slackening
you may have been slackening
they may have been slackening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mayn't slacken
you mayn't slacken
he mayn't slacken
we mayn't slacken
you mayn't slacken
they mayn't slacken 	I mayn't be slackening
you mayn't be slackening
he mayn't be slackening
we mayn't be slackening
you mayn't be slackening
they mayn't be slackening	I mayn't have slackened
you mayn't have slackened
he mayn't have slackened
we mayn't have slackened
you mayn't have slackened
they mayn't have slackened	I mayn't have been slackening
you mayn't have been slackening
he mayn't have been slackening
we mayn't have been slackening
you mayn't have been slackening
they mayn't have been slackening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I slacken?
may you slacken?
may he slacken?
may we slacken?
may you slacken?
may they slacken? 	may I be slackening?
may you be slackening?
may he be slackening?
may we be slackening?
may you be slackening?
may they be slackening? 	may I have slackened?
may you have slackened?
may he have slackened?
may we have slackened?
may you have slackened?
may they have slackened? 	may I have been slackening?
may you have been slackening?
may he have been slackening?
may we have been slackening?
may you have been slackening?
may they have been slackening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mayn't I slacken?
mayn't you slacken?
mayn't he slacken?
mayn't we slacken?
mayn't you slacken?
mayn't they slacken? 	mayn't I be slackening?
mayn't you be slackening?
mayn't he be slackening?
mayn't we be slackening?
mayn't you be slackening?
mayn't they be slackening? 	mayn't I have slackened?
mayn't you have slackened?
mayn't he have slackened?
mayn't we have slackened?
mayn't you have slackened?
mayn't they have slackened? 	mayn't I have been slackening?
mayn't you have been slackening?
mayn't he have been slackening?
mayn't we have been slackening?
mayn't you have been slackening?
mayn't they have been slackening?