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