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