ought to sift
Verbo regolare: sift - sifted- sifted

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I ought to sift
you ought to sift
he ought to sift
we ought to sift
you ought to sift
they ought to sift 	I ought to be sifting
you ought to be sifting
he ought to be sifting
we ought to be sifting
you ought to be sifting
they ought to be sifting	I ought to have sifted
you ought to have sifted
he ought to have sifted
we ought to have sifted
you ought to have sifted
they ought to have sifted	I ought to have been sifting
you ought to have been sifting
he ought to have been sifting
we ought to have been sifting
you ought to have been sifting
they ought to have been sifting	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I ought not to sift
you ought not to sift
he ought not to sift
we ought not to sift
you ought not to sift
they ought not to sift 	I ought not to sifting
you ought not to sifting
he ought not to sifting
we ought not to sifting
you ought not to sifting
they ought not to sifting	I ought not to have sifted
you ought not to have sifted
he ought not to have sifted
we ought not to have sifted
you ought not to have sifted
they ought not to have sifted	I ought not to have been sifting
you ought not to have been sifting
he ought not to have been sifting
we ought not to have been sifting
you ought not to have been sifting
they ought not to have been sifting	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
ought to I sift?
ought to you sift?
ought to he sift?
ought to we sift?
ought to you sift?
ought to they sift? 	ought to I be sifting?
ought to you be sifting?
ought to he be sifting?
ought to we be sifting?
ought to you be sifting?
ought to they be sifting? 	ought to I have sifted?
ought to you have sifted?
ought to he have sifted?
ought to we have sifted?
ought to you have sifted?
ought to they have sifted? 	ought to I have been sifting?
ought to you have been sifting?
ought to he have been sifting?
ought to we have been sifting?
ought to you have been sifting?
ought to they have been sifting? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
ought I not to sift?
ought you not to sift?
ought he not to sift?
ought we not to sift?
ought you not to sift?
ought they not to sift? 	ought I not to be sifting?
ought you not to be sifting?
ought he not to be sifting?
ought we not to be sifting?
ought you not to be sifting?
ought they not to be sifting? 	ought I not to have sifted?
ought you not to have sifted?
ought he not to have sifted?
ought we not to have sifted?
ought you not to have sifted?
ought they not to have sifted? 	ought I not to have been sifting?
ought you not to have been sifting?
ought he not to have been sifting?
ought we not to have been sifting?
ought you not to have been sifting?
ought they not to have been sifting?