I must witness you must witness he must witness we must witness you must witness they must witness
Forma con V-ing
I must be witnessing you must be witnessing he must be witnessing we must be witnessing you must be witnessing they must be witnessing
Perfetto
I must have witnessed you must have witnessed he must have witnessed we must have witnessed you must have witnessed they must have witnessed
Perfetto con V-ing
I must have been witnessing you must have been witnessing he must have been witnessing we must have been witnessing you must have been witnessing they must have been witnessing
Negazione
Forma semplice
I mustn't witness you mustn't witness he mustn't witness we mustn't witness you mustn't witness they mustn't witness
Forma con V-ing
I mustn't be witnessing you mustn't be witnessing he mustn't be witnessing we mustn't be witnessing you mustn't be witnessing they mustn't be witnessing
Perfetto
I mustn't have witnessed you mustn't have witnessed he mustn't have witnessed we mustn't have witnessed you mustn't have witnessed they mustn't have witnessed
Perfetto con V-ing
I mustn't have been witnessing you mustn't have been witnessing he mustn't have been witnessing we mustn't have been witnessing you mustn't have been witnessing they mustn't have been witnessing
Forma interrogativa
Forma semplice
must I witness? must you witness? must he witness? must we witness? must you witness? must they witness?
Forma con V-ing
must I be witnessing? must you be witnessing? must he be witnessing? must we be witnessing? must you be witnessing? must they be witnessing?
Perfetto
must I have witnessed? must you have witnessed? must he have witnessed? must we have witnessed? must you have witnessed? must they have witnessed?
Perfetto con V-ing
must I have been witnessing? must you have been witnessing? must he have been witnessing? must we have been witnessing? must you have been witnessing? must they have been witnessing?
Forma interro-negativa
Forma semplice
mustn't I witness? mustn't you witness? mustn't he witness? mustn't we witness? mustn't you witness? mustn't they witness?
Forma con V-ing
mustn't I be witnessing? mustn't you be witnessing? mustn't he be witnessing? mustn't we be witnessing? mustn't you be witnessing? mustn't they be witnessing?
Perfetto
mustn't I have witnessed? mustn't you have witnessed? mustn't he have witnessed? mustn't we have witnessed? mustn't you have witnessed? mustn't they have witnessed?
Perfetto con V-ing
mustn't I have been witnessing? mustn't you have been witnessing? mustn't he have been witnessing? mustn't we have been witnessing? mustn't you have been witnessing? mustn't they have been witnessing?