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