I can fast you can fast he can fast we can fast you can fast they can fast
Forma con V-ing
I can be fasting you can be fasting he can be fasting we can be fasting you can be fasting they can be fasting
Perfecto
I can have fasted you can have fasted he can have fasted we can have fasted you can have fasted they can have fasted
Perfecto con V-ing
I can have been fasting you can have been fasting he can have been fasting we can have been fasting you can have been fasting they can have been fasting
Negación
Forma simple
I can't fast you can't fast he can't fast we can't fast you can't fast they can't fast
Forma con V-ing
I can't be fasting you can't be fasting he can't be fasting we can't be fasting you can't be fasting they can't be fasting
Perfecto
I can't have fasted you can't have fasted he can't have fasted we can't have fasted you can't have fasted they can't have fasted
Perfecto con V-ing
I can't have been fasting you can't have been fasting he can't have been fasting we can't have been fasting you can't have been fasting they can't have been fasting
Forma interrogativa
Forma simple
can I fast? can you fast? can he fast? can we fast? can you fast? can they fast?
Forma con V-ing
can I be fasting? can you be fasting? can he be fasting? can we be fasting? can you be fasting? can they be fasting?
Perfecto
can I have fasted? can you have fasted? can he have fasted? can we have fasted? can you have fasted? can they have fasted?
Perfecto con V-ing
can I have been fasting? can you have been fasting? can he have been fasting? can we have been fasting? can you have been fasting? can they have been fasting?
Forma interro-negativa
Forma simple
can't I fast? can't you fast? can't he fast? can't we fast? can't you fast? can't they fast?
Forma con V-ing
can't I be fasting? can't you be fasting? can't he be fasting? can't we be fasting? can't you be fasting? can't they be fasting?
Perfecto
can't I have fasted? can't you have fasted? can't he have fasted? can't we have fasted? can't you have fasted? can't they have fasted?
Perfecto con V-ing
can't I have been fasting? can't you have been fasting? can't he have been fasting? can't we have been fasting? can't you have been fasting? can't they have been fasting?