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