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