I must starch you must starch she must starch we must starch you must starch they must starch
Forma com V-ing
I must be starching you must be starching she must be starching we must be starching you must be starching they must be starching
Perfeito
I must have starched you must have starched she must have starched we must have starched you must have starched they must have starched
Perfeito com V-ing
I must have been starching you must have been starching she must have been starching we must have been starching you must have been starching they must have been starching
Negação
Forma simple
I must not starch you must not starch she must not starch we must not starch you must not starch they must not starch
Forma com V-ing
I must not be starching you must not be starching she must not be starching we must not be starching you must not be starching they must not be starching
Perfeito
I must not have starched you must not have starched she must not have starched we must not have starched you must not have starched they must not have starched
Perfeito com V-ing
I must not have been starching you must not have been starching she 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 she starch? must we starch? must you starch? must they starch?
Forma com V-ing
must I be starching? must you be starching? must she be starching? must we be starching? must you be starching? must they be starching?
Perfeito
must I have starched? must you have starched? must she have starched? must we have starched? must you have starched? must they have starched?
Perfeito com V-ing
must I have been starching? must you have been starching? must she have been starching? must we have been starching? must you have been starching? must they have been starching?
Forma interro-Negação
Forma simple
must I not starch? must you not starch? must she not starch? must we not starch? must you not starch? must they not starch?
Forma com V-ing
must I not be starching? must you not be starching? must she not be starching? must we not be starching? must you not be starching? must they not be starching?
Perfeito
must I not have starched? must you not have starched? must she not have starched? must we not have starched? must you not have starched? must they not have starched?
Perfeito com V-ing
must I not have been starching? must you not have been starching? must she not have been starching? must we not have been starching? must you not have been starching? must they not have been starching?