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