may strengthen
Verbo regular: strengthen - strengthened- strengthened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may strengthen
you may strengthen
he may strengthen
we may strengthen
you may strengthen
they may strengthen 	I may be strengthening
you may be strengthening
he may be strengthening
we may be strengthening
you may be strengthening
they may be strengthening	I may have strengthened
you may have strengthened
he may have strengthened
we may have strengthened
you may have strengthened
they may have strengthened	I may have been strengthening
you may have been strengthening
he may have been strengthening
we may have been strengthening
you may have been strengthening
they may have been strengthening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mayn't strengthen
you mayn't strengthen
he mayn't strengthen
we mayn't strengthen
you mayn't strengthen
they mayn't strengthen 	I mayn't be strengthening
you mayn't be strengthening
he mayn't be strengthening
we mayn't be strengthening
you mayn't be strengthening
they mayn't be strengthening	I mayn't have strengthened
you mayn't have strengthened
he mayn't have strengthened
we mayn't have strengthened
you mayn't have strengthened
they mayn't have strengthened	I mayn't have been strengthening
you mayn't have been strengthening
he mayn't have been strengthening
we mayn't have been strengthening
you mayn't have been strengthening
they mayn't have been strengthening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I strengthen?
may you strengthen?
may he strengthen?
may we strengthen?
may you strengthen?
may they strengthen? 	may I be strengthening?
may you be strengthening?
may he be strengthening?
may we be strengthening?
may you be strengthening?
may they be strengthening? 	may I have strengthened?
may you have strengthened?
may he have strengthened?
may we have strengthened?
may you have strengthened?
may they have strengthened? 	may I have been strengthening?
may you have been strengthening?
may he have been strengthening?
may we have been strengthening?
may you have been strengthening?
may they have been strengthening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mayn't I strengthen?
mayn't you strengthen?
mayn't he strengthen?
mayn't we strengthen?
mayn't you strengthen?
mayn't they strengthen? 	mayn't I be strengthening?
mayn't you be strengthening?
mayn't he be strengthening?
mayn't we be strengthening?
mayn't you be strengthening?
mayn't they be strengthening? 	mayn't I have strengthened?
mayn't you have strengthened?
mayn't he have strengthened?
mayn't we have strengthened?
mayn't you have strengthened?
mayn't they have strengthened? 	mayn't I have been strengthening?
mayn't you have been strengthening?
mayn't he have been strengthening?
mayn't we have been strengthening?
mayn't you have been strengthening?
mayn't they have been strengthening?