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