I must add you must add she must add we must add you must add they must add
Forma con V-ing
I must be adding you must be adding she must be adding we must be adding you must be adding they must be adding
Perfecto
I must have added you must have added she must have added we must have added you must have added they must have added
Perfecto con V-ing
I must have been adding you must have been adding she must have been adding we must have been adding you must have been adding they must have been adding
Negación
Forma simple
I must not add you must not add she must not add we must not add you must not add they must not add
Forma con V-ing
I must not be adding you must not be adding she must not be adding we must not be adding you must not be adding they must not be adding
Perfecto
I must not have added you must not have added she must not have added we must not have added you must not have added they must not have added
Perfecto con V-ing
I must not have been adding you must not have been adding she must not have been adding we must not have been adding you must not have been adding they must not have been adding
Forma interrogativa
Forma simple
must I add? must you add? must she add? must we add? must you add? must they add?
Forma con V-ing
must I be adding? must you be adding? must she be adding? must we be adding? must you be adding? must they be adding?
Perfecto
must I have added? must you have added? must she have added? must we have added? must you have added? must they have added?
Perfecto con V-ing
must I have been adding? must you have been adding? must she have been adding? must we have been adding? must you have been adding? must they have been adding?
Forma interro-negativa
Forma simple
must I not add? must you not add? must she not add? must we not add? must you not add? must they not add?
Forma con V-ing
must I not be adding? must you not be adding? must she not be adding? must we not be adding? must you not be adding? must they not be adding?
Perfecto
must I not have added? must you not have added? must she not have added? must we not have added? must you not have added? must they not have added?
Perfecto con V-ing
must I not have been adding? must you not have been adding? must she not have been adding? must we not have been adding? must you not have been adding? must they not have been adding?