I must strengthen you must strengthen she must strengthen we must strengthen you must strengthen they must strengthen
Form mit V-ing
I must be strengthening you must be strengthening she must be strengthening we must be strengthening you must be strengthening they must be strengthening
Perfekt
I must have strengthened you must have strengthened she must have strengthened we must have strengthened you must have strengthened they must have strengthened
Perfekt mit V-ing
I must have been strengthening you must have been strengthening she must have been strengthening we must have been strengthening you must have been strengthening they must have been strengthening
Negation
Einfache Form
I mustn't strengthen you mustn't strengthen she mustn't strengthen we mustn't strengthen you mustn't strengthen they mustn't strengthen
Form mit V-ing
I mustn't be strengthening you mustn't be strengthening she mustn't be strengthening we mustn't be strengthening you mustn't be strengthening they mustn't be strengthening
Perfekt
I mustn't have strengthened you mustn't have strengthened she mustn't have strengthened we mustn't have strengthened you mustn't have strengthened they mustn't have strengthened
Perfekt mit V-ing
I mustn't have been strengthening you mustn't have been strengthening she mustn't have been strengthening we mustn't have been strengthening you mustn't have been strengthening they mustn't have been strengthening
Fragende Form
Einfache Form
must I strengthen? must you strengthen? must she strengthen? must we strengthen? must you strengthen? must they strengthen?
Form mit V-ing
must I be strengthening? must you be strengthening? must she be strengthening? must we be strengthening? must you be strengthening? must they be strengthening?
Perfekt
must I have strengthened? must you have strengthened? must she have strengthened? must we have strengthened? must you have strengthened? must they have strengthened?
Perfekt mit V-ing
must I have been strengthening? must you have been strengthening? must she have been strengthening? must we have been strengthening? must you have been strengthening? must they have been strengthening?
Fragende Negation Form
Einfache Form
mustn't I strengthen? mustn't you strengthen? mustn't she strengthen? mustn't we strengthen? mustn't you strengthen? mustn't they strengthen?
Form mit V-ing
mustn't I be strengthening? mustn't you be strengthening? mustn't she be strengthening? mustn't we be strengthening? mustn't you be strengthening? mustn't they be strengthening?
Perfekt
mustn't I have strengthened? mustn't you have strengthened? mustn't she have strengthened? mustn't we have strengthened? mustn't you have strengthened? mustn't they have strengthened?
Perfekt mit V-ing
mustn't I have been strengthening? mustn't you have been strengthening? mustn't she have been strengthening? mustn't we have been strengthening? mustn't you have been strengthening? mustn't they have been strengthening?