I must retreat you must retreat he must retreat we must retreat you must retreat they must retreat
Forma con V-ing
I must be retreating you must be retreating he must be retreating we must be retreating you must be retreating they must be retreating
Perfecto
I must have retreated you must have retreated he must have retreated we must have retreated you must have retreated they must have retreated
Perfecto con V-ing
I must have been retreating you must have been retreating he must have been retreating we must have been retreating you must have been retreating they must have been retreating
Negación
Forma simple
I mustn't retreat you mustn't retreat he mustn't retreat we mustn't retreat you mustn't retreat they mustn't retreat
Forma con V-ing
I mustn't be retreating you mustn't be retreating he mustn't be retreating we mustn't be retreating you mustn't be retreating they mustn't be retreating
Perfecto
I mustn't have retreated you mustn't have retreated he mustn't have retreated we mustn't have retreated you mustn't have retreated they mustn't have retreated
Perfecto con V-ing
I mustn't have been retreating you mustn't have been retreating he mustn't have been retreating we mustn't have been retreating you mustn't have been retreating they mustn't have been retreating
Forma interrogativa
Forma simple
must I retreat? must you retreat? must he retreat? must we retreat? must you retreat? must they retreat?
Forma con V-ing
must I be retreating? must you be retreating? must he be retreating? must we be retreating? must you be retreating? must they be retreating?
Perfecto
must I have retreated? must you have retreated? must he have retreated? must we have retreated? must you have retreated? must they have retreated?
Perfecto con V-ing
must I have been retreating? must you have been retreating? must he have been retreating? must we have been retreating? must you have been retreating? must they have been retreating?
Forma interro-negativa
Forma simple
mustn't I retreat? mustn't you retreat? mustn't he retreat? mustn't we retreat? mustn't you retreat? mustn't they retreat?
Forma con V-ing
mustn't I be retreating? mustn't you be retreating? mustn't he be retreating? mustn't we be retreating? mustn't you be retreating? mustn't they be retreating?
Perfecto
mustn't I have retreated? mustn't you have retreated? mustn't he have retreated? mustn't we have retreated? mustn't you have retreated? mustn't they have retreated?
Perfecto con V-ing
mustn't I have been retreating? mustn't you have been retreating? mustn't he have been retreating? mustn't we have been retreating? mustn't you have been retreating? mustn't they have been retreating?