I must bs you must bs she must bs we must bs you must bs they must bs
Forma con V-ing
I must be bsing you must be bsing she must be bsing we must be bsing you must be bsing they must be bsing
Perfecto
I must have bsed you must have bsed she must have bsed we must have bsed you must have bsed they must have bsed
Perfecto con V-ing
I must have been bsing you must have been bsing she must have been bsing we must have been bsing you must have been bsing they must have been bsing
Negación
Forma simple
I must not bs you must not bs she must not bs we must not bs you must not bs they must not bs
Forma con V-ing
I must not be bsing you must not be bsing she must not be bsing we must not be bsing you must not be bsing they must not be bsing
Perfecto
I must not have bsed you must not have bsed she must not have bsed we must not have bsed you must not have bsed they must not have bsed
Perfecto con V-ing
I must not have been bsing you must not have been bsing she must not have been bsing we must not have been bsing you must not have been bsing they must not have been bsing
Forma interrogativa
Forma simple
must I bs? must you bs? must she bs? must we bs? must you bs? must they bs?
Forma con V-ing
must I be bsing? must you be bsing? must she be bsing? must we be bsing? must you be bsing? must they be bsing?
Perfecto
must I have bsed? must you have bsed? must she have bsed? must we have bsed? must you have bsed? must they have bsed?
Perfecto con V-ing
must I have been bsing? must you have been bsing? must she have been bsing? must we have been bsing? must you have been bsing? must they have been bsing?
Forma interro-negativa
Forma simple
must I not bs? must you not bs? must she not bs? must we not bs? must you not bs? must they not bs?
Forma con V-ing
must I not be bsing? must you not be bsing? must she not be bsing? must we not be bsing? must you not be bsing? must they not be bsing?
Perfecto
must I not have bsed? must you not have bsed? must she not have bsed? must we not have bsed? must you not have bsed? must they not have bsed?
Perfecto con V-ing
must I not have been bsing? must you not have been bsing? must she not have been bsing? must we not have been bsing? must you not have been bsing? must they not have been bsing?