I must impoverish you must impoverish she must impoverish we must impoverish you must impoverish they must impoverish
Forme en V-ing
I must be impoverishing you must be impoverishing she must be impoverishing we must be impoverishing you must be impoverishing they must be impoverishing
Perfect
I must have impoverished you must have impoverished she must have impoverished we must have impoverished you must have impoverished they must have impoverished
Perfect en V-ing
I must have been impoverishing you must have been impoverishing she must have been impoverishing we must have been impoverishing you must have been impoverishing they must have been impoverishing
Négation
Forme simple
I mustn't impoverish you mustn't impoverish she mustn't impoverish we mustn't impoverish you mustn't impoverish they mustn't impoverish
Forme en V-ing
I mustn't be impoverishing you mustn't be impoverishing she mustn't be impoverishing we mustn't be impoverishing you mustn't be impoverishing they mustn't be impoverishing
Perfect
I mustn't have impoverished you mustn't have impoverished she mustn't have impoverished we mustn't have impoverished you mustn't have impoverished they mustn't have impoverished
Perfect en V-ing
I mustn't have been impoverishing you mustn't have been impoverishing she mustn't have been impoverishing we mustn't have been impoverishing you mustn't have been impoverishing they mustn't have been impoverishing
Forme interrogative
Forme simple
must I impoverish? must you impoverish? must she impoverish? must we impoverish? must you impoverish? must they impoverish?
Forme en V-ing
must I be impoverishing? must you be impoverishing? must she be impoverishing? must we be impoverishing? must you be impoverishing? must they be impoverishing?
Perfect
must I have impoverished? must you have impoverished? must she have impoverished? must we have impoverished? must you have impoverished? must they have impoverished?
Perfect en V-ing
must I have been impoverishing? must you have been impoverishing? must she have been impoverishing? must we have been impoverishing? must you have been impoverishing? must they have been impoverishing?
Forme interro-négative
Forme simple
mustn't I impoverish? mustn't you impoverish? mustn't she impoverish? mustn't we impoverish? mustn't you impoverish? mustn't they impoverish?
Forme en V-ing
mustn't I be impoverishing? mustn't you be impoverishing? mustn't she be impoverishing? mustn't we be impoverishing? mustn't you be impoverishing? mustn't they be impoverishing?
Perfect
mustn't I have impoverished? mustn't you have impoverished? mustn't she have impoverished? mustn't we have impoverished? mustn't you have impoverished? mustn't they have impoverished?
Perfect en V-ing
mustn't I have been impoverishing? mustn't you have been impoverishing? mustn't she have been impoverishing? mustn't we have been impoverishing? mustn't you have been impoverishing? mustn't they have been impoverishing?