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