I can fall you can fall he can fall we can fall you can fall they can fall
Forma con V-ing
I can be falling you can be falling he can be falling we can be falling you can be falling they can be falling
Perfecto
I can have fallen you can have fallen he can have fallen we can have fallen you can have fallen they can have fallen
Perfecto con V-ing
I can have been falling you can have been falling he can have been falling we can have been falling you can have been falling they can have been falling
Negación
Forma simple
I cannot fall you cannot fall he cannot fall we cannot fall you cannot fall they cannot fall
Forma con V-ing
I cannot be falling you cannot be falling he cannot be falling we cannot be falling you cannot be falling they cannot be falling
Perfecto
I cannot have fallen you cannot have fallen he cannot have fallen we cannot have fallen you cannot have fallen they cannot have fallen
Perfecto con V-ing
I cannot have been falling you cannot have been falling he cannot have been falling we cannot have been falling you cannot have been falling they cannot have been falling
Forma interrogativa
Forma simple
can I fall? can you fall? can he fall? can we fall? can you fall? can they fall?
Forma con V-ing
can I be falling? can you be falling? can he be falling? can we be falling? can you be falling? can they be falling?
Perfecto
can I have fallen? can you have fallen? can he have fallen? can we have fallen? can you have fallen? can they have fallen?
Perfecto con V-ing
can I have been falling? can you have been falling? can he have been falling? can we have been falling? can you have been falling? can they have been falling?
Forma interro-negativa
Forma simple
can I not fall? can you not fall? can he not fall? can we not fall? can you not fall? can they not fall?
Forma con V-ing
can I not be falling? can you not be falling? can he not be falling? can we not be falling? can you not be falling? can they not be falling?
Perfecto
can I not have fallen? can you not have fallen? can he not have fallen? can we not have fallen? can you not have fallen? can they not have fallen?
Perfecto con V-ing
can I not have been falling? can you not have been falling? can he not have been falling? can we not have been falling? can you not have been falling? can they not have been falling?