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 mustn't grease you mustn't grease she mustn't grease we mustn't grease you mustn't grease they mustn't grease
Forma con V-ing
I mustn't be greasing you mustn't be greasing she mustn't be greasing we mustn't be greasing you mustn't be greasing they mustn't be greasing
Perfecto
I mustn't have greased you mustn't have greased she mustn't have greased we mustn't have greased you mustn't have greased they mustn't have greased
Perfecto con V-ing
I mustn't have been greasing you mustn't have been greasing she mustn't have been greasing we mustn't have been greasing you mustn't have been greasing they mustn't 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
mustn't I grease? mustn't you grease? mustn't she grease? mustn't we grease? mustn't you grease? mustn't they grease?
Forma con V-ing
mustn't I be greasing? mustn't you be greasing? mustn't she be greasing? mustn't we be greasing? mustn't you be greasing? mustn't they be greasing?
Perfecto
mustn't I have greased? mustn't you have greased? mustn't she have greased? mustn't we have greased? mustn't you have greased? mustn't they have greased?
Perfecto con V-ing
mustn't I have been greasing? mustn't you have been greasing? mustn't she have been greasing? mustn't we have been greasing? mustn't you have been greasing? mustn't they have been greasing?