I must haven you must haven she must haven we must haven you must haven they must haven
Forma con V-ing
I must be havening you must be havening she must be havening we must be havening you must be havening they must be havening
Perfecto
I must have havened you must have havened she must have havened we must have havened you must have havened they must have havened
Perfecto con V-ing
I must have been havening you must have been havening she must have been havening we must have been havening you must have been havening they must have been havening
Negación
Forma simple
I must not haven you must not haven she must not haven we must not haven you must not haven they must not haven
Forma con V-ing
I must not be havening you must not be havening she must not be havening we must not be havening you must not be havening they must not be havening
Perfecto
I must not have havened you must not have havened she must not have havened we must not have havened you must not have havened they must not have havened
Perfecto con V-ing
I must not have been havening you must not have been havening she must not have been havening we must not have been havening you must not have been havening they must not have been havening
Forma interrogativa
Forma simple
must I haven? must you haven? must she haven? must we haven? must you haven? must they haven?
Forma con V-ing
must I be havening? must you be havening? must she be havening? must we be havening? must you be havening? must they be havening?
Perfecto
must I have havened? must you have havened? must she have havened? must we have havened? must you have havened? must they have havened?
Perfecto con V-ing
must I have been havening? must you have been havening? must she have been havening? must we have been havening? must you have been havening? must they have been havening?
Forma interro-negativa
Forma simple
must I not haven? must you not haven? must she not haven? must we not haven? must you not haven? must they not haven?
Forma con V-ing
must I not be havening? must you not be havening? must she not be havening? must we not be havening? must you not be havening? must they not be havening?
Perfecto
must I not have havened? must you not have havened? must she not have havened? must we not have havened? must you not have havened? must they not have havened?
Perfecto con V-ing
must I not have been havening? must you not have been havening? must she not have been havening? must we not have been havening? must you not have been havening? must they not have been havening?