may exchange
Verbo regular: exchange - exchanged- exchanged

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may exchange
you may exchange
he may exchange
we may exchange
you may exchange
they may exchange 	I may be exchanging
you may be exchanging
he may be exchanging
we may be exchanging
you may be exchanging
they may be exchanging	I may have exchanged
you may have exchanged
he may have exchanged
we may have exchanged
you may have exchanged
they may have exchanged	I may have been exchanging
you may have been exchanging
he may have been exchanging
we may have been exchanging
you may have been exchanging
they may have been exchanging	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not exchange
you may not exchange
he may not exchange
we may not exchange
you may not exchange
they may not exchange 	I may not be exchanging
you may not be exchanging
he may not be exchanging
we may not be exchanging
you may not be exchanging
they may not be exchanging	I may not have exchanged
you may not have exchanged
he may not have exchanged
we may not have exchanged
you may not have exchanged
they may not have exchanged	I may not have been exchanging
you may not have been exchanging
he may not have been exchanging
we may not have been exchanging
you may not have been exchanging
they may not have been exchanging	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I exchange?
may you exchange?
may he exchange?
may we exchange?
may you exchange?
may they exchange? 	may I be exchanging?
may you be exchanging?
may he be exchanging?
may we be exchanging?
may you be exchanging?
may they be exchanging? 	may I have exchanged?
may you have exchanged?
may he have exchanged?
may we have exchanged?
may you have exchanged?
may they have exchanged? 	may I have been exchanging?
may you have been exchanging?
may he have been exchanging?
may we have been exchanging?
may you have been exchanging?
may they have been exchanging? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not exchange?
may you not exchange?
may he not exchange?
may we not exchange?
may you not exchange?
may they not exchange? 	may I not be exchanging?
may you not be exchanging?
may he not be exchanging?
may we not be exchanging?
may you not be exchanging?
may they not be exchanging? 	may I not have exchanged?
may you not have exchanged?
may he not have exchanged?
may we not have exchanged?
may you not have exchanged?
may they not have exchanged? 	may I not have been exchanging?
may you not have been exchanging?
may he not have been exchanging?
may we not have been exchanging?
may you not have been exchanging?
may they not have been exchanging?