I must coal you must coal he must coal we must coal you must coal they must coal
Forma con V-ing
I must be coaling you must be coaling he must be coaling we must be coaling you must be coaling they must be coaling
Perfecto
I must have coaled you must have coaled he must have coaled we must have coaled you must have coaled they must have coaled
Perfecto con V-ing
I must have been coaling you must have been coaling he must have been coaling we must have been coaling you must have been coaling they must have been coaling
Negación
Forma simple
I must not coal you must not coal he must not coal we must not coal you must not coal they must not coal
Forma con V-ing
I must not be coaling you must not be coaling he must not be coaling we must not be coaling you must not be coaling they must not be coaling
Perfecto
I must not have coaled you must not have coaled he must not have coaled we must not have coaled you must not have coaled they must not have coaled
Perfecto con V-ing
I must not have been coaling you must not have been coaling he must not have been coaling we must not have been coaling you must not have been coaling they must not have been coaling
Forma interrogativa
Forma simple
must I coal? must you coal? must he coal? must we coal? must you coal? must they coal?
Forma con V-ing
must I be coaling? must you be coaling? must he be coaling? must we be coaling? must you be coaling? must they be coaling?
Perfecto
must I have coaled? must you have coaled? must he have coaled? must we have coaled? must you have coaled? must they have coaled?
Perfecto con V-ing
must I have been coaling? must you have been coaling? must he have been coaling? must we have been coaling? must you have been coaling? must they have been coaling?
Forma interro-negativa
Forma simple
must I not coal? must you not coal? must he not coal? must we not coal? must you not coal? must they not coal?
Forma con V-ing
must I not be coaling? must you not be coaling? must he not be coaling? must we not be coaling? must you not be coaling? must they not be coaling?
Perfecto
must I not have coaled? must you not have coaled? must he not have coaled? must we not have coaled? must you not have coaled? must they not have coaled?
Perfecto con V-ing
must I not have been coaling? must you not have been coaling? must he not have been coaling? must we not have been coaling? must you not have been coaling? must they not have been coaling?