may sift
Verbo regular: sift - sifted- sifted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I may sift
you may sift
he may sift
we may sift
you may sift
they may sift 	I may be sifting
you may be sifting
he may be sifting
we may be sifting
you may be sifting
they may be sifting	I may have sifted
you may have sifted
he may have sifted
we may have sifted
you may have sifted
they may have sifted	I may have been sifting
you may have been sifting
he may have been sifting
we may have been sifting
you may have been sifting
they may have been sifting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mayn't sift
you mayn't sift
he mayn't sift
we mayn't sift
you mayn't sift
they mayn't sift 	I mayn't be sifting
you mayn't be sifting
he mayn't be sifting
we mayn't be sifting
you mayn't be sifting
they mayn't be sifting	I mayn't have sifted
you mayn't have sifted
he mayn't have sifted
we mayn't have sifted
you mayn't have sifted
they mayn't have sifted	I mayn't have been sifting
you mayn't have been sifting
he mayn't have been sifting
we mayn't have been sifting
you mayn't have been sifting
they mayn't have been sifting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
may I sift?
may you sift?
may he sift?
may we sift?
may you sift?
may they sift? 	may I be sifting?
may you be sifting?
may he be sifting?
may we be sifting?
may you be sifting?
may they be sifting? 	may I have sifted?
may you have sifted?
may he have sifted?
may we have sifted?
may you have sifted?
may they have sifted? 	may I have been sifting?
may you have been sifting?
may he have been sifting?
may we have been sifting?
may you have been sifting?
may they have been sifting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mayn't I sift?
mayn't you sift?
mayn't he sift?
mayn't we sift?
mayn't you sift?
mayn't they sift? 	mayn't I be sifting?
mayn't you be sifting?
mayn't he be sifting?
mayn't we be sifting?
mayn't you be sifting?
mayn't they be sifting? 	mayn't I have sifted?
mayn't you have sifted?
mayn't he have sifted?
mayn't we have sifted?
mayn't you have sifted?
mayn't they have sifted? 	mayn't I have been sifting?
mayn't you have been sifting?
mayn't he have been sifting?
mayn't we have been sifting?
mayn't you have been sifting?
mayn't they have been sifting?