I must fair you must fair she must fair we must fair you must fair they must fair
Forma con V-ing
I must be fairing you must be fairing she must be fairing we must be fairing you must be fairing they must be fairing
Perfecto
I must have faired you must have faired she must have faired we must have faired you must have faired they must have faired
Perfecto con V-ing
I must have been fairing you must have been fairing she must have been fairing we must have been fairing you must have been fairing they must have been fairing
Negación
Forma simple
I must not fair you must not fair she must not fair we must not fair you must not fair they must not fair
Forma con V-ing
I must not be fairing you must not be fairing she must not be fairing we must not be fairing you must not be fairing they must not be fairing
Perfecto
I must not have faired you must not have faired she must not have faired we must not have faired you must not have faired they must not have faired
Perfecto con V-ing
I must not have been fairing you must not have been fairing she must not have been fairing we must not have been fairing you must not have been fairing they must not have been fairing
Forma interrogativa
Forma simple
must I fair? must you fair? must she fair? must we fair? must you fair? must they fair?
Forma con V-ing
must I be fairing? must you be fairing? must she be fairing? must we be fairing? must you be fairing? must they be fairing?
Perfecto
must I have faired? must you have faired? must she have faired? must we have faired? must you have faired? must they have faired?
Perfecto con V-ing
must I have been fairing? must you have been fairing? must she have been fairing? must we have been fairing? must you have been fairing? must they have been fairing?
Forma interro-negativa
Forma simple
must I not fair? must you not fair? must she not fair? must we not fair? must you not fair? must they not fair?
Forma con V-ing
must I not be fairing? must you not be fairing? must she not be fairing? must we not be fairing? must you not be fairing? must they not be fairing?
Perfecto
must I not have faired? must you not have faired? must she not have faired? must we not have faired? must you not have faired? must they not have faired?
Perfecto con V-ing
must I not have been fairing? must you not have been fairing? must she not have been fairing? must we not have been fairing? must you not have been fairing? must they not have been fairing?