I can stretch you can stretch he can stretch we can stretch you can stretch they can stretch
Forma con V-ing
I can be stretching you can be stretching he can be stretching we can be stretching you can be stretching they can be stretching
Perfecto
I can have stretched you can have stretched he can have stretched we can have stretched you can have stretched they can have stretched
Perfecto con V-ing
I can have been stretching you can have been stretching he can have been stretching we can have been stretching you can have been stretching they can have been stretching
Negación
Forma simple
I can't stretch you can't stretch he can't stretch we can't stretch you can't stretch they can't stretch
Forma con V-ing
I can't be stretching you can't be stretching he can't be stretching we can't be stretching you can't be stretching they can't be stretching
Perfecto
I can't have stretched you can't have stretched he can't have stretched we can't have stretched you can't have stretched they can't have stretched
Perfecto con V-ing
I can't have been stretching you can't have been stretching he can't have been stretching we can't have been stretching you can't have been stretching they can't have been stretching
Forma interrogativa
Forma simple
can I stretch? can you stretch? can he stretch? can we stretch? can you stretch? can they stretch?
Forma con V-ing
can I be stretching? can you be stretching? can he be stretching? can we be stretching? can you be stretching? can they be stretching?
Perfecto
can I have stretched? can you have stretched? can he have stretched? can we have stretched? can you have stretched? can they have stretched?
Perfecto con V-ing
can I have been stretching? can you have been stretching? can he have been stretching? can we have been stretching? can you have been stretching? can they have been stretching?
Forma interro-negativa
Forma simple
can't I stretch? can't you stretch? can't he stretch? can't we stretch? can't you stretch? can't they stretch?
Forma con V-ing
can't I be stretching? can't you be stretching? can't he be stretching? can't we be stretching? can't you be stretching? can't they be stretching?
Perfecto
can't I have stretched? can't you have stretched? can't he have stretched? can't we have stretched? can't you have stretched? can't they have stretched?
Perfecto con V-ing
can't I have been stretching? can't you have been stretching? can't he have been stretching? can't we have been stretching? can't you have been stretching? can't they have been stretching?