I must worsen you must worsen he must worsen we must worsen you must worsen they must worsen
Forma con V-ing
I must be worsening you must be worsening he must be worsening we must be worsening you must be worsening they must be worsening
Perfecto
I must have worsened you must have worsened he must have worsened we must have worsened you must have worsened they must have worsened
Perfecto con V-ing
I must have been worsening you must have been worsening he must have been worsening we must have been worsening you must have been worsening they must have been worsening
Negación
Forma simple
I must not worsen you must not worsen he must not worsen we must not worsen you must not worsen they must not worsen
Forma con V-ing
I must not be worsening you must not be worsening he must not be worsening we must not be worsening you must not be worsening they must not be worsening
Perfecto
I must not have worsened you must not have worsened he must not have worsened we must not have worsened you must not have worsened they must not have worsened
Perfecto con V-ing
I must not have been worsening you must not have been worsening he must not have been worsening we must not have been worsening you must not have been worsening they must not have been worsening
Forma interrogativa
Forma simple
must I worsen? must you worsen? must he worsen? must we worsen? must you worsen? must they worsen?
Forma con V-ing
must I be worsening? must you be worsening? must he be worsening? must we be worsening? must you be worsening? must they be worsening?
Perfecto
must I have worsened? must you have worsened? must he have worsened? must we have worsened? must you have worsened? must they have worsened?
Perfecto con V-ing
must I have been worsening? must you have been worsening? must he have been worsening? must we have been worsening? must you have been worsening? must they have been worsening?
Forma interro-negativa
Forma simple
must I not worsen? must you not worsen? must he not worsen? must we not worsen? must you not worsen? must they not worsen?
Forma con V-ing
must I not be worsening? must you not be worsening? must he not be worsening? must we not be worsening? must you not be worsening? must they not be worsening?
Perfecto
must I not have worsened? must you not have worsened? must he not have worsened? must we not have worsened? must you not have worsened? must they not have worsened?
Perfecto con V-ing
must I not have been worsening? must you not have been worsening? must he not have been worsening? must we not have been worsening? must you not have been worsening? must they not have been worsening?