I must witness you must witness she must witness we must witness you must witness they must witness
Forma con V-ing
I must be witnessing you must be witnessing she must be witnessing we must be witnessing you must be witnessing they must be witnessing
Perfetto
I must have witnessed you must have witnessed she 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 she 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 she 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 she 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 she 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 she 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 she witness? must we witness? must you witness? must they witness?
Forma con V-ing
must I be witnessing? must you be witnessing? must she be witnessing? must we be witnessing? must you be witnessing? must they be witnessing?
Perfetto
must I have witnessed? must you have witnessed? must she 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 she 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 she 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 she 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 she 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 she have been witnessing? mustn't we have been witnessing? mustn't you have been witnessing? mustn't they have been witnessing?