Conjugación del verbo inglés
CAN SIFT

Verbo regular: sift - sifted - sifted

Afirmación

Forma simple	Forma con V-ing
I can sift you can sift he can sift we can sift you can sift they can sift	I can be sifting you can be sifting he can be sifting we can be sifting you can be sifting they can be sifting
Perfecto	Perfecto con V-ing
I can have sifted you can have sifted he can have sifted we can have sifted you can have sifted they can have sifted	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

Negación

Forma simple	Forma con V-ing
I can't sift you can't sift he can't sift we can't sift you can't sift they can't sift	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
Perfecto	Perfecto con V-ing
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	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

Forma interrogativa

Forma simple	Forma con V-ing
can I sift? can you sift? can he sift? can we sift? can you sift? can they sift?	can I be sifting? can you be sifting? can he be sifting? can we be sifting? can you be sifting? can they be sifting?
Perfecto	Perfecto con V-ing
can I have sifted? can you have sifted? can he have sifted? can we have sifted? can you have sifted? can they have sifted?	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?

Forma interro-negativa

Forma simple	Forma con V-ing
can't I sift? can't you sift? can't he sift? can't we sift? can't you sift? can't they sift?	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?
Perfecto	Perfecto con V-ing
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?	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?