I must starch you must starch he must starch we must starch you must starch they must starch
Forma con V-ing
I must be starching you must be starching he must be starching we must be starching you must be starching they must be starching
Perfecto
I must have starched you must have starched he must have starched we must have starched you must have starched they must have starched
Perfecto con V-ing
I must have been starching you must have been starching he must have been starching we must have been starching you must have been starching they must have been starching
Negación
Forma simple
I must not starch you must not starch he must not starch we must not starch you must not starch they must not starch
Forma con V-ing
I must not be starching you must not be starching he must not be starching we must not be starching you must not be starching they must not be starching
Perfecto
I must not have starched you must not have starched he must not have starched we must not have starched you must not have starched they must not have starched
Perfecto con V-ing
I must not have been starching you must not have been starching he must not have been starching we must not have been starching you must not have been starching they must not have been starching
Forma interrogativa
Forma simple
must I starch? must you starch? must he starch? must we starch? must you starch? must they starch?
Forma con V-ing
must I be starching? must you be starching? must he be starching? must we be starching? must you be starching? must they be starching?
Perfecto
must I have starched? must you have starched? must he have starched? must we have starched? must you have starched? must they have starched?
Perfecto con V-ing
must I have been starching? must you have been starching? must he have been starching? must we have been starching? must you have been starching? must they have been starching?
Forma interro-negativa
Forma simple
must I not starch? must you not starch? must he not starch? must we not starch? must you not starch? must they not starch?
Forma con V-ing
must I not be starching? must you not be starching? must he not be starching? must we not be starching? must you not be starching? must they not be starching?
Perfecto
must I not have starched? must you not have starched? must he not have starched? must we not have starched? must you not have starched? must they not have starched?
Perfecto con V-ing
must I not have been starching? must you not have been starching? must he not have been starching? must we not have been starching? must you not have been starching? must they not have been starching?