I must breathe you must breathe he must breathe we must breathe you must breathe they must breathe
Forme en V-ing
I must be breathing you must be breathing he must be breathing we must be breathing you must be breathing they must be breathing
Perfect
I must have breathed you must have breathed he must have breathed we must have breathed you must have breathed they must have breathed
Perfect en V-ing
I must have been breathing you must have been breathing he must have been breathing we must have been breathing you must have been breathing they must have been breathing
Négation
Forme simple
I mustn't breathe you mustn't breathe he mustn't breathe we mustn't breathe you mustn't breathe they mustn't breathe
Forme en V-ing
I mustn't be breathing you mustn't be breathing he mustn't be breathing we mustn't be breathing you mustn't be breathing they mustn't be breathing
Perfect
I mustn't have breathed you mustn't have breathed he mustn't have breathed we mustn't have breathed you mustn't have breathed they mustn't have breathed
Perfect en V-ing
I mustn't have been breathing you mustn't have been breathing he mustn't have been breathing we mustn't have been breathing you mustn't have been breathing they mustn't have been breathing
Forme interrogative
Forme simple
must I breathe? must you breathe? must he breathe? must we breathe? must you breathe? must they breathe?
Forme en V-ing
must I be breathing? must you be breathing? must he be breathing? must we be breathing? must you be breathing? must they be breathing?
Perfect
must I have breathed? must you have breathed? must he have breathed? must we have breathed? must you have breathed? must they have breathed?
Perfect en V-ing
must I have been breathing? must you have been breathing? must he have been breathing? must we have been breathing? must you have been breathing? must they have been breathing?
Forme interro-négative
Forme simple
mustn't I breathe? mustn't you breathe? mustn't he breathe? mustn't we breathe? mustn't you breathe? mustn't they breathe?
Forme en V-ing
mustn't I be breathing? mustn't you be breathing? mustn't he be breathing? mustn't we be breathing? mustn't you be breathing? mustn't they be breathing?
Perfect
mustn't I have breathed? mustn't you have breathed? mustn't he have breathed? mustn't we have breathed? mustn't you have breathed? mustn't they have breathed?
Perfect en V-ing
mustn't I have been breathing? mustn't you have been breathing? mustn't he have been breathing? mustn't we have been breathing? mustn't you have been breathing? mustn't they have been breathing?