I must corrode you must corrode she must corrode we must corrode you must corrode they must corrode
Forma con V-ing
I must be corroding you must be corroding she must be corroding we must be corroding you must be corroding they must be corroding
Perfecto
I must have corroded you must have corroded she must have corroded we must have corroded you must have corroded they must have corroded
Perfecto con V-ing
I must have been corroding you must have been corroding she must have been corroding we must have been corroding you must have been corroding they must have been corroding
Negación
Forma simple
I must not corrode you must not corrode she must not corrode we must not corrode you must not corrode they must not corrode
Forma con V-ing
I must not be corroding you must not be corroding she must not be corroding we must not be corroding you must not be corroding they must not be corroding
Perfecto
I must not have corroded you must not have corroded she must not have corroded we must not have corroded you must not have corroded they must not have corroded
Perfecto con V-ing
I must not have been corroding you must not have been corroding she must not have been corroding we must not have been corroding you must not have been corroding they must not have been corroding
Forma interrogativa
Forma simple
must I corrode? must you corrode? must she corrode? must we corrode? must you corrode? must they corrode?
Forma con V-ing
must I be corroding? must you be corroding? must she be corroding? must we be corroding? must you be corroding? must they be corroding?
Perfecto
must I have corroded? must you have corroded? must she have corroded? must we have corroded? must you have corroded? must they have corroded?
Perfecto con V-ing
must I have been corroding? must you have been corroding? must she have been corroding? must we have been corroding? must you have been corroding? must they have been corroding?
Forma interro-negativa
Forma simple
must I not corrode? must you not corrode? must she not corrode? must we not corrode? must you not corrode? must they not corrode?
Forma con V-ing
must I not be corroding? must you not be corroding? must she not be corroding? must we not be corroding? must you not be corroding? must they not be corroding?
Perfecto
must I not have corroded? must you not have corroded? must she not have corroded? must we not have corroded? must you not have corroded? must they not have corroded?
Perfecto con V-ing
must I not have been corroding? must you not have been corroding? must she not have been corroding? must we not have been corroding? must you not have been corroding? must they not have been corroding?