may sieve
Verbo regular: sieve - sieved- sieved

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may sieve
you may sieve
she may sieve
we may sieve
you may sieve
they may sieve 	I may be sieving
you may be sieving
she may be sieving
we may be sieving
you may be sieving
they may be sieving	I may have sieved
you may have sieved
she may have sieved
we may have sieved
you may have sieved
they may have sieved	I may have been sieving
you may have been sieving
she may have been sieving
we may have been sieving
you may have been sieving
they may have been sieving	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may not sieve
you may not sieve
she may not sieve
we may not sieve
you may not sieve
they may not sieve 	I may not be sieving
you may not be sieving
she may not be sieving
we may not be sieving
you may not be sieving
they may not be sieving	I may not have sieved
you may not have sieved
she may not have sieved
we may not have sieved
you may not have sieved
they may not have sieved	I may not have been sieving
you may not have been sieving
she may not have been sieving
we may not have been sieving
you may not have been sieving
they may not have been sieving	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I sieve?
may you sieve?
may she sieve?
may we sieve?
may you sieve?
may they sieve? 	may I be sieving?
may you be sieving?
may she be sieving?
may we be sieving?
may you be sieving?
may they be sieving? 	may I have sieved?
may you have sieved?
may she have sieved?
may we have sieved?
may you have sieved?
may they have sieved? 	may I have been sieving?
may you have been sieving?
may she have been sieving?
may we have been sieving?
may you have been sieving?
may they have been sieving? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I not sieve?
may you not sieve?
may she not sieve?
may we not sieve?
may you not sieve?
may they not sieve? 	may I not be sieving?
may you not be sieving?
may she not be sieving?
may we not be sieving?
may you not be sieving?
may they not be sieving? 	may I not have sieved?
may you not have sieved?
may she not have sieved?
may we not have sieved?
may you not have sieved?
may they not have sieved? 	may I not have been sieving?
may you not have been sieving?
may she not have been sieving?
may we not have been sieving?
may you not have been sieving?
may they not have been sieving?