I must smother you must smother he must smother we must smother you must smother they must smother
Forma con V-ing
I must be smothering you must be smothering he must be smothering we must be smothering you must be smothering they must be smothering
Perfecto
I must have smothered you must have smothered he must have smothered we must have smothered you must have smothered they must have smothered
Perfecto con V-ing
I must have been smothering you must have been smothering he must have been smothering we must have been smothering you must have been smothering they must have been smothering
Negación
Forma simple
I must not smother you must not smother he must not smother we must not smother you must not smother they must not smother
Forma con V-ing
I must not be smothering you must not be smothering he must not be smothering we must not be smothering you must not be smothering they must not be smothering
Perfecto
I must not have smothered you must not have smothered he must not have smothered we must not have smothered you must not have smothered they must not have smothered
Perfecto con V-ing
I must not have been smothering you must not have been smothering he must not have been smothering we must not have been smothering you must not have been smothering they must not have been smothering
Forma interrogativa
Forma simple
must I smother? must you smother? must he smother? must we smother? must you smother? must they smother?
Forma con V-ing
must I be smothering? must you be smothering? must he be smothering? must we be smothering? must you be smothering? must they be smothering?
Perfecto
must I have smothered? must you have smothered? must he have smothered? must we have smothered? must you have smothered? must they have smothered?
Perfecto con V-ing
must I have been smothering? must you have been smothering? must he have been smothering? must we have been smothering? must you have been smothering? must they have been smothering?
Forma interro-negativa
Forma simple
must I not smother? must you not smother? must he not smother? must we not smother? must you not smother? must they not smother?
Forma con V-ing
must I not be smothering? must you not be smothering? must he not be smothering? must we not be smothering? must you not be smothering? must they not be smothering?
Perfecto
must I not have smothered? must you not have smothered? must he not have smothered? must we not have smothered? must you not have smothered? must they not have smothered?
Perfecto con V-ing
must I not have been smothering? must you not have been smothering? must he not have been smothering? must we not have been smothering? must you not have been smothering? must they not have been smothering?