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