I must ad-lib you must ad-lib she must ad-lib we must ad-lib you must ad-lib they must ad-lib
Forme en V-ing
I must be ad-libing you must be ad-libing she must be ad-libing we must be ad-libing you must be ad-libing they must be ad-libing
Perfect
I must have ad-libed you must have ad-libed she must have ad-libed we must have ad-libed you must have ad-libed they must have ad-libed
Perfect en V-ing
I must have been ad-libing you must have been ad-libing she must have been ad-libing we must have been ad-libing you must have been ad-libing they must have been ad-libing
Négation
Forme simple
I mustn't ad-lib you mustn't ad-lib she mustn't ad-lib we mustn't ad-lib you mustn't ad-lib they mustn't ad-lib
Forme en V-ing
I mustn't be ad-libing you mustn't be ad-libing she mustn't be ad-libing we mustn't be ad-libing you mustn't be ad-libing they mustn't be ad-libing
Perfect
I mustn't have ad-libed you mustn't have ad-libed she mustn't have ad-libed we mustn't have ad-libed you mustn't have ad-libed they mustn't have ad-libed
Perfect en V-ing
I mustn't have been ad-libing you mustn't have been ad-libing she mustn't have been ad-libing we mustn't have been ad-libing you mustn't have been ad-libing they mustn't have been ad-libing
Forme interrogative
Forme simple
must I ad-lib? must you ad-lib? must she ad-lib? must we ad-lib? must you ad-lib? must they ad-lib?
Forme en V-ing
must I be ad-libing? must you be ad-libing? must she be ad-libing? must we be ad-libing? must you be ad-libing? must they be ad-libing?
Perfect
must I have ad-libed? must you have ad-libed? must she have ad-libed? must we have ad-libed? must you have ad-libed? must they have ad-libed?
Perfect en V-ing
must I have been ad-libing? must you have been ad-libing? must she have been ad-libing? must we have been ad-libing? must you have been ad-libing? must they have been ad-libing?
Forme interro-négative
Forme simple
mustn't I ad-lib? mustn't you ad-lib? mustn't she ad-lib? mustn't we ad-lib? mustn't you ad-lib? mustn't they ad-lib?
Forme en V-ing
mustn't I be ad-libing? mustn't you be ad-libing? mustn't she be ad-libing? mustn't we be ad-libing? mustn't you be ad-libing? mustn't they be ad-libing?
Perfect
mustn't I have ad-libed? mustn't you have ad-libed? mustn't she have ad-libed? mustn't we have ad-libed? mustn't you have ad-libed? mustn't they have ad-libed?
Perfect en V-ing
mustn't I have been ad-libing? mustn't you have been ad-libing? mustn't she have been ad-libing? mustn't we have been ad-libing? mustn't you have been ad-libing? mustn't they have been ad-libing?