I must perfect you must perfect he must perfect we must perfect you must perfect they must perfect
Forma con V-ing
I must be perfecting you must be perfecting he must be perfecting we must be perfecting you must be perfecting they must be perfecting
Perfecto
I must have perfected you must have perfected he must have perfected we must have perfected you must have perfected they must have perfected
Perfecto con V-ing
I must have been perfecting you must have been perfecting he must have been perfecting we must have been perfecting you must have been perfecting they must have been perfecting
Negación
Forma simple
I must not perfect you must not perfect he must not perfect we must not perfect you must not perfect they must not perfect
Forma con V-ing
I must not be perfecting you must not be perfecting he must not be perfecting we must not be perfecting you must not be perfecting they must not be perfecting
Perfecto
I must not have perfected you must not have perfected he must not have perfected we must not have perfected you must not have perfected they must not have perfected
Perfecto con V-ing
I must not have been perfecting you must not have been perfecting he must not have been perfecting we must not have been perfecting you must not have been perfecting they must not have been perfecting
Forma interrogativa
Forma simple
must I perfect? must you perfect? must he perfect? must we perfect? must you perfect? must they perfect?
Forma con V-ing
must I be perfecting? must you be perfecting? must he be perfecting? must we be perfecting? must you be perfecting? must they be perfecting?
Perfecto
must I have perfected? must you have perfected? must he have perfected? must we have perfected? must you have perfected? must they have perfected?
Perfecto con V-ing
must I have been perfecting? must you have been perfecting? must he have been perfecting? must we have been perfecting? must you have been perfecting? must they have been perfecting?
Forma interro-negativa
Forma simple
must I not perfect? must you not perfect? must he not perfect? must we not perfect? must you not perfect? must they not perfect?
Forma con V-ing
must I not be perfecting? must you not be perfecting? must he not be perfecting? must we not be perfecting? must you not be perfecting? must they not be perfecting?
Perfecto
must I not have perfected? must you not have perfected? must he not have perfected? must we not have perfected? must you not have perfected? must they not have perfected?
Perfecto con V-ing
must I not have been perfecting? must you not have been perfecting? must he not have been perfecting? must we not have been perfecting? must you not have been perfecting? must they not have been perfecting?