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