I can sleep you can sleep she can sleep we can sleep you can sleep they can sleep
Forma con V-ing
I can be sleeping you can be sleeping she can be sleeping we can be sleeping you can be sleeping they can be sleeping
Perfecto
I can have slept you can have slept she can have slept we can have slept you can have slept they can have slept
Perfecto con V-ing
I can have been sleeping you can have been sleeping she can have been sleeping we can have been sleeping you can have been sleeping they can have been sleeping
Negación
Forma simple
I can't sleep you can't sleep she can't sleep we can't sleep you can't sleep they can't sleep
Forma con V-ing
I can't be sleeping you can't be sleeping she can't be sleeping we can't be sleeping you can't be sleeping they can't be sleeping
Perfecto
I can't have slept you can't have slept she can't have slept we can't have slept you can't have slept they can't have slept
Perfecto con V-ing
I can't have been sleeping you can't have been sleeping she can't have been sleeping we can't have been sleeping you can't have been sleeping they can't have been sleeping
Forma interrogativa
Forma simple
can I sleep? can you sleep? can she sleep? can we sleep? can you sleep? can they sleep?
Forma con V-ing
can I be sleeping? can you be sleeping? can she be sleeping? can we be sleeping? can you be sleeping? can they be sleeping?
Perfecto
can I have slept? can you have slept? can she have slept? can we have slept? can you have slept? can they have slept?
Perfecto con V-ing
can I have been sleeping? can you have been sleeping? can she have been sleeping? can we have been sleeping? can you have been sleeping? can they have been sleeping?
Forma interro-negativa
Forma simple
can't I sleep? can't you sleep? can't she sleep? can't we sleep? can't you sleep? can't they sleep?
Forma con V-ing
can't I be sleeping? can't you be sleeping? can't she be sleeping? can't we be sleeping? can't you be sleeping? can't they be sleeping?
Perfecto
can't I have slept? can't you have slept? can't she have slept? can't we have slept? can't you have slept? can't they have slept?
Perfecto con V-ing
can't I have been sleeping? can't you have been sleeping? can't she have been sleeping? can't we have been sleeping? can't you have been sleeping? can't they have been sleeping?