I can explain you can explain he can explain we can explain you can explain they can explain
Forma con V-ing
I can be explaining you can be explaining he can be explaining we can be explaining you can be explaining they can be explaining
Perfecto
I can have explained you can have explained he can have explained we can have explained you can have explained they can have explained
Perfecto con V-ing
I can have been explaining you can have been explaining he can have been explaining we can have been explaining you can have been explaining they can have been explaining
Negación
Forma simple
I cannot explain you cannot explain he cannot explain we cannot explain you cannot explain they cannot explain
Forma con V-ing
I cannot be explaining you cannot be explaining he cannot be explaining we cannot be explaining you cannot be explaining they cannot be explaining
Perfecto
I cannot have explained you cannot have explained he cannot have explained we cannot have explained you cannot have explained they cannot have explained
Perfecto con V-ing
I cannot have been explaining you cannot have been explaining he cannot have been explaining we cannot have been explaining you cannot have been explaining they cannot have been explaining
Forma interrogativa
Forma simple
can I explain? can you explain? can he explain? can we explain? can you explain? can they explain?
Forma con V-ing
can I be explaining? can you be explaining? can he be explaining? can we be explaining? can you be explaining? can they be explaining?
Perfecto
can I have explained? can you have explained? can he have explained? can we have explained? can you have explained? can they have explained?
Perfecto con V-ing
can I have been explaining? can you have been explaining? can he have been explaining? can we have been explaining? can you have been explaining? can they have been explaining?
Forma interro-negativa
Forma simple
can I not explain? can you not explain? can he not explain? can we not explain? can you not explain? can they not explain?
Forma con V-ing
can I not be explaining? can you not be explaining? can he not be explaining? can we not be explaining? can you not be explaining? can they not be explaining?
Perfecto
can I not have explained? can you not have explained? can he not have explained? can we not have explained? can you not have explained? can they not have explained?
Perfecto con V-ing
can I not have been explaining? can you not have been explaining? can he not have been explaining? can we not have been explaining? can you not have been explaining? can they not have been explaining?