I must lesson you must lesson he must lesson we must lesson you must lesson they must lesson
Forma con V-ing
I must be lessoning you must be lessoning he must be lessoning we must be lessoning you must be lessoning they must be lessoning
Perfecto
I must have lessoned you must have lessoned he must have lessoned we must have lessoned you must have lessoned they must have lessoned
Perfecto con V-ing
I must have been lessoning you must have been lessoning he must have been lessoning we must have been lessoning you must have been lessoning they must have been lessoning
Negación
Forma simple
I mustn't lesson you mustn't lesson he mustn't lesson we mustn't lesson you mustn't lesson they mustn't lesson
Forma con V-ing
I mustn't be lessoning you mustn't be lessoning he mustn't be lessoning we mustn't be lessoning you mustn't be lessoning they mustn't be lessoning
Perfecto
I mustn't have lessoned you mustn't have lessoned he mustn't have lessoned we mustn't have lessoned you mustn't have lessoned they mustn't have lessoned
Perfecto con V-ing
I mustn't have been lessoning you mustn't have been lessoning he mustn't have been lessoning we mustn't have been lessoning you mustn't have been lessoning they mustn't have been lessoning
Forma interrogativa
Forma simple
must I lesson? must you lesson? must he lesson? must we lesson? must you lesson? must they lesson?
Forma con V-ing
must I be lessoning? must you be lessoning? must he be lessoning? must we be lessoning? must you be lessoning? must they be lessoning?
Perfecto
must I have lessoned? must you have lessoned? must he have lessoned? must we have lessoned? must you have lessoned? must they have lessoned?
Perfecto con V-ing
must I have been lessoning? must you have been lessoning? must he have been lessoning? must we have been lessoning? must you have been lessoning? must they have been lessoning?
Forma interro-negativa
Forma simple
mustn't I lesson? mustn't you lesson? mustn't he lesson? mustn't we lesson? mustn't you lesson? mustn't they lesson?
Forma con V-ing
mustn't I be lessoning? mustn't you be lessoning? mustn't he be lessoning? mustn't we be lessoning? mustn't you be lessoning? mustn't they be lessoning?
Perfecto
mustn't I have lessoned? mustn't you have lessoned? mustn't he have lessoned? mustn't we have lessoned? mustn't you have lessoned? mustn't they have lessoned?
Perfecto con V-ing
mustn't I have been lessoning? mustn't you have been lessoning? mustn't he have been lessoning? mustn't we have been lessoning? mustn't you have been lessoning? mustn't they have been lessoning?