I must substitute you must substitute he must substitute we must substitute you must substitute they must substitute
Form mit V-ing
I must be substituting you must be substituting he must be substituting we must be substituting you must be substituting they must be substituting
Perfekt
I must have substituted you must have substituted he must have substituted we must have substituted you must have substituted they must have substituted
Perfekt mit V-ing
I must have been substituting you must have been substituting he must have been substituting we must have been substituting you must have been substituting they must have been substituting
Negation
Einfache Form
I mustn't substitute you mustn't substitute he mustn't substitute we mustn't substitute you mustn't substitute they mustn't substitute
Form mit V-ing
I mustn't be substituting you mustn't be substituting he mustn't be substituting we mustn't be substituting you mustn't be substituting they mustn't be substituting
Perfekt
I mustn't have substituted you mustn't have substituted he mustn't have substituted we mustn't have substituted you mustn't have substituted they mustn't have substituted
Perfekt mit V-ing
I mustn't have been substituting you mustn't have been substituting he mustn't have been substituting we mustn't have been substituting you mustn't have been substituting they mustn't have been substituting
Fragende Form
Einfache Form
must I substitute? must you substitute? must he substitute? must we substitute? must you substitute? must they substitute?
Form mit V-ing
must I be substituting? must you be substituting? must he be substituting? must we be substituting? must you be substituting? must they be substituting?
Perfekt
must I have substituted? must you have substituted? must he have substituted? must we have substituted? must you have substituted? must they have substituted?
Perfekt mit V-ing
must I have been substituting? must you have been substituting? must he have been substituting? must we have been substituting? must you have been substituting? must they have been substituting?
Fragende Negation Form
Einfache Form
mustn't I substitute? mustn't you substitute? mustn't he substitute? mustn't we substitute? mustn't you substitute? mustn't they substitute?
Form mit V-ing
mustn't I be substituting? mustn't you be substituting? mustn't he be substituting? mustn't we be substituting? mustn't you be substituting? mustn't they be substituting?
Perfekt
mustn't I have substituted? mustn't you have substituted? mustn't he have substituted? mustn't we have substituted? mustn't you have substituted? mustn't they have substituted?
Perfekt mit V-ing
mustn't I have been substituting? mustn't you have been substituting? mustn't he have been substituting? mustn't we have been substituting? mustn't you have been substituting? mustn't they have been substituting?