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