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