I must replace you must replace he must replace we must replace you must replace they must replace
Forma com V-ing
I must be replacing you must be replacing he must be replacing we must be replacing you must be replacing they must be replacing
Perfeito
I must have replaced you must have replaced he must have replaced we must have replaced you must have replaced they must have replaced
Perfeito com V-ing
I must have been replacing you must have been replacing he must have been replacing we must have been replacing you must have been replacing they must have been replacing
Negação
Forma simple
I must not replace you must not replace he must not replace we must not replace you must not replace they must not replace
Forma com V-ing
I must not be replacing you must not be replacing he must not be replacing we must not be replacing you must not be replacing they must not be replacing
Perfeito
I must not have replaced you must not have replaced he must not have replaced we must not have replaced you must not have replaced they must not have replaced
Perfeito com V-ing
I must not have been replacing you must not have been replacing he must not have been replacing we must not have been replacing you must not have been replacing they must not have been replacing
Forma interrogativa
Forma simple
must I replace? must you replace? must he replace? must we replace? must you replace? must they replace?
Forma com V-ing
must I be replacing? must you be replacing? must he be replacing? must we be replacing? must you be replacing? must they be replacing?
Perfeito
must I have replaced? must you have replaced? must he have replaced? must we have replaced? must you have replaced? must they have replaced?
Perfeito com V-ing
must I have been replacing? must you have been replacing? must he have been replacing? must we have been replacing? must you have been replacing? must they have been replacing?
Forma interro-Negação
Forma simple
must I not replace? must you not replace? must he not replace? must we not replace? must you not replace? must they not replace?
Forma com V-ing
must I not be replacing? must you not be replacing? must he not be replacing? must we not be replacing? must you not be replacing? must they not be replacing?
Perfeito
must I not have replaced? must you not have replaced? must he not have replaced? must we not have replaced? must you not have replaced? must they not have replaced?
Perfeito com V-ing
must I not have been replacing? must you not have been replacing? must he not have been replacing? must we not have been replacing? must you not have been replacing? must they not have been replacing?