I can sip you can sip he can sip we can sip you can sip they can sip
Forma con V-ing
I can be sipping you can be sipping he can be sipping we can be sipping you can be sipping they can be sipping
Perfecto
I can have sipped you can have sipped he can have sipped we can have sipped you can have sipped they can have sipped
Perfecto con V-ing
I can have been sipping you can have been sipping he can have been sipping we can have been sipping you can have been sipping they can have been sipping
Negación
Forma simple
I can't sip you can't sip he can't sip we can't sip you can't sip they can't sip
Forma con V-ing
I can't be sipping you can't be sipping he can't be sipping we can't be sipping you can't be sipping they can't be sipping
Perfecto
I can't have sipped you can't have sipped he can't have sipped we can't have sipped you can't have sipped they can't have sipped
Perfecto con V-ing
I can't have been sipping you can't have been sipping he can't have been sipping we can't have been sipping you can't have been sipping they can't have been sipping
Forma interrogativa
Forma simple
can I sip? can you sip? can he sip? can we sip? can you sip? can they sip?
Forma con V-ing
can I be sipping? can you be sipping? can he be sipping? can we be sipping? can you be sipping? can they be sipping?
Perfecto
can I have sipped? can you have sipped? can he have sipped? can we have sipped? can you have sipped? can they have sipped?
Perfecto con V-ing
can I have been sipping? can you have been sipping? can he have been sipping? can we have been sipping? can you have been sipping? can they have been sipping?
Forma interro-negativa
Forma simple
can't I sip? can't you sip? can't he sip? can't we sip? can't you sip? can't they sip?
Forma con V-ing
can't I be sipping? can't you be sipping? can't he be sipping? can't we be sipping? can't you be sipping? can't they be sipping?
Perfecto
can't I have sipped? can't you have sipped? can't he have sipped? can't we have sipped? can't you have sipped? can't they have sipped?
Perfecto con V-ing
can't I have been sipping? can't you have been sipping? can't he have been sipping? can't we have been sipping? can't you have been sipping? can't they have been sipping?