I must dredge you must dredge he must dredge we must dredge you must dredge they must dredge
Forma con V-ing
I must be dredging you must be dredging he must be dredging we must be dredging you must be dredging they must be dredging
Perfecto
I must have dredged you must have dredged he must have dredged we must have dredged you must have dredged they must have dredged
Perfecto con V-ing
I must have been dredging you must have been dredging he must have been dredging we must have been dredging you must have been dredging they must have been dredging
Negación
Forma simple
I must not dredge you must not dredge he must not dredge we must not dredge you must not dredge they must not dredge
Forma con V-ing
I must not be dredging you must not be dredging he must not be dredging we must not be dredging you must not be dredging they must not be dredging
Perfecto
I must not have dredged you must not have dredged he must not have dredged we must not have dredged you must not have dredged they must not have dredged
Perfecto con V-ing
I must not have been dredging you must not have been dredging he must not have been dredging we must not have been dredging you must not have been dredging they must not have been dredging
Forma interrogativa
Forma simple
must I dredge? must you dredge? must he dredge? must we dredge? must you dredge? must they dredge?
Forma con V-ing
must I be dredging? must you be dredging? must he be dredging? must we be dredging? must you be dredging? must they be dredging?
Perfecto
must I have dredged? must you have dredged? must he have dredged? must we have dredged? must you have dredged? must they have dredged?
Perfecto con V-ing
must I have been dredging? must you have been dredging? must he have been dredging? must we have been dredging? must you have been dredging? must they have been dredging?
Forma interro-negativa
Forma simple
must I not dredge? must you not dredge? must he not dredge? must we not dredge? must you not dredge? must they not dredge?
Forma con V-ing
must I not be dredging? must you not be dredging? must he not be dredging? must we not be dredging? must you not be dredging? must they not be dredging?
Perfecto
must I not have dredged? must you not have dredged? must he not have dredged? must we not have dredged? must you not have dredged? must they not have dredged?
Perfecto con V-ing
must I not have been dredging? must you not have been dredging? must he not have been dredging? must we not have been dredging? must you not have been dredging? must they not have been dredging?