I can sift you can sift he can sift we can sift you can sift they can sift
Forme en V-ing
I can be sifting you can be sifting he can be sifting we can be sifting you can be sifting they can be sifting
Perfect
I can have sifted you can have sifted he can have sifted we can have sifted you can have sifted they can have sifted
Perfect en V-ing
I can have been sifting you can have been sifting he can have been sifting we can have been sifting you can have been sifting they can have been sifting
Négation
Forme simple
I can't sift you can't sift he can't sift we can't sift you can't sift they can't sift
Forme en V-ing
I can't be sifting you can't be sifting he can't be sifting we can't be sifting you can't be sifting they can't be sifting
Perfect
I can't have sifted you can't have sifted he can't have sifted we can't have sifted you can't have sifted they can't have sifted
Perfect en V-ing
I can't have been sifting you can't have been sifting he can't have been sifting we can't have been sifting you can't have been sifting they can't have been sifting
Forme interrogative
Forme simple
can I sift? can you sift? can he sift? can we sift? can you sift? can they sift?
Forme en V-ing
can I be sifting? can you be sifting? can he be sifting? can we be sifting? can you be sifting? can they be sifting?
Perfect
can I have sifted? can you have sifted? can he have sifted? can we have sifted? can you have sifted? can they have sifted?
Perfect en V-ing
can I have been sifting? can you have been sifting? can he have been sifting? can we have been sifting? can you have been sifting? can they have been sifting?
Forme interro-négative
Forme simple
can't I sift? can't you sift? can't he sift? can't we sift? can't you sift? can't they sift?
Forme en V-ing
can't I be sifting? can't you be sifting? can't he be sifting? can't we be sifting? can't you be sifting? can't they be sifting?
Perfect
can't I have sifted? can't you have sifted? can't he have sifted? can't we have sifted? can't you have sifted? can't they have sifted?
Perfect en V-ing
can't I have been sifting? can't you have been sifting? can't he have been sifting? can't we have been sifting? can't you have been sifting? can't they have been sifting?