Attention, ce verbe peut ne pas exister, la conjugaison est donnée à titre d'exemple.
Affirmation
Forme simple
I must uderstate sth you must uderstate sth he must uderstate sth we must uderstate sth you must uderstate sth they must uderstate sth
Forme en V-ing
I must be uderstate sthing you must be uderstate sthing he must be uderstate sthing we must be uderstate sthing you must be uderstate sthing they must be uderstate sthing
Perfect
I must have uderstate sthed you must have uderstate sthed he must have uderstate sthed we must have uderstate sthed you must have uderstate sthed they must have uderstate sthed
Perfect en V-ing
I must have been uderstate sthing you must have been uderstate sthing he must have been uderstate sthing we must have been uderstate sthing you must have been uderstate sthing they must have been uderstate sthing
Négation
Forme simple
I mustn't uderstate sth you mustn't uderstate sth he mustn't uderstate sth we mustn't uderstate sth you mustn't uderstate sth they mustn't uderstate sth
Forme en V-ing
I mustn't be uderstate sthing you mustn't be uderstate sthing he mustn't be uderstate sthing we mustn't be uderstate sthing you mustn't be uderstate sthing they mustn't be uderstate sthing
Perfect
I mustn't have uderstate sthed you mustn't have uderstate sthed he mustn't have uderstate sthed we mustn't have uderstate sthed you mustn't have uderstate sthed they mustn't have uderstate sthed
Perfect en V-ing
I mustn't have been uderstate sthing you mustn't have been uderstate sthing he mustn't have been uderstate sthing we mustn't have been uderstate sthing you mustn't have been uderstate sthing they mustn't have been uderstate sthing
Forme interrogative
Forme simple
must I uderstate sth? must you uderstate sth? must he uderstate sth? must we uderstate sth? must you uderstate sth? must they uderstate sth?
Forme en V-ing
must I be uderstate sthing? must you be uderstate sthing? must he be uderstate sthing? must we be uderstate sthing? must you be uderstate sthing? must they be uderstate sthing?
Perfect
must I have uderstate sthed? must you have uderstate sthed? must he have uderstate sthed? must we have uderstate sthed? must you have uderstate sthed? must they have uderstate sthed?
Perfect en V-ing
must I have been uderstate sthing? must you have been uderstate sthing? must he have been uderstate sthing? must we have been uderstate sthing? must you have been uderstate sthing? must they have been uderstate sthing?
Forme interro-négative
Forme simple
mustn't I uderstate sth? mustn't you uderstate sth? mustn't he uderstate sth? mustn't we uderstate sth? mustn't you uderstate sth? mustn't they uderstate sth?
Forme en V-ing
mustn't I be uderstate sthing? mustn't you be uderstate sthing? mustn't he be uderstate sthing? mustn't we be uderstate sthing? mustn't you be uderstate sthing? mustn't they be uderstate sthing?
Perfect
mustn't I have uderstate sthed? mustn't you have uderstate sthed? mustn't he have uderstate sthed? mustn't we have uderstate sthed? mustn't you have uderstate sthed? mustn't they have uderstate sthed?
Perfect en V-ing
mustn't I have been uderstate sthing? mustn't you have been uderstate sthing? mustn't he have been uderstate sthing? mustn't we have been uderstate sthing? mustn't you have been uderstate sthing? mustn't they have been uderstate sthing?