I can engineer you can engineer he can engineer we can engineer you can engineer they can engineer
Forma con V-ing
I can be engineering you can be engineering he can be engineering we can be engineering you can be engineering they can be engineering
Perfecto
I can have engineered you can have engineered he can have engineered we can have engineered you can have engineered they can have engineered
Perfecto con V-ing
I can have been engineering you can have been engineering he can have been engineering we can have been engineering you can have been engineering they can have been engineering
Negación
Forma simple
I cannot engineer you cannot engineer he cannot engineer we cannot engineer you cannot engineer they cannot engineer
Forma con V-ing
I cannot be engineering you cannot be engineering he cannot be engineering we cannot be engineering you cannot be engineering they cannot be engineering
Perfecto
I cannot have engineered you cannot have engineered he cannot have engineered we cannot have engineered you cannot have engineered they cannot have engineered
Perfecto con V-ing
I cannot have been engineering you cannot have been engineering he cannot have been engineering we cannot have been engineering you cannot have been engineering they cannot have been engineering
Forma interrogativa
Forma simple
can I engineer? can you engineer? can he engineer? can we engineer? can you engineer? can they engineer?
Forma con V-ing
can I be engineering? can you be engineering? can he be engineering? can we be engineering? can you be engineering? can they be engineering?
Perfecto
can I have engineered? can you have engineered? can he have engineered? can we have engineered? can you have engineered? can they have engineered?
Perfecto con V-ing
can I have been engineering? can you have been engineering? can he have been engineering? can we have been engineering? can you have been engineering? can they have been engineering?
Forma interro-negativa
Forma simple
can I not engineer? can you not engineer? can he not engineer? can we not engineer? can you not engineer? can they not engineer?
Forma con V-ing
can I not be engineering? can you not be engineering? can he not be engineering? can we not be engineering? can you not be engineering? can they not be engineering?
Perfecto
can I not have engineered? can you not have engineered? can he not have engineered? can we not have engineered? can you not have engineered? can they not have engineered?
Perfecto con V-ing
can I not have been engineering? can you not have been engineering? can he not have been engineering? can we not have been engineering? can you not have been engineering? can they not have been engineering?