I must ventilate you must ventilate he must ventilate we must ventilate you must ventilate they must ventilate
Form mit V-ing
I must be ventilating you must be ventilating he must be ventilating we must be ventilating you must be ventilating they must be ventilating
Perfekt
I must have ventilated you must have ventilated he must have ventilated we must have ventilated you must have ventilated they must have ventilated
Perfekt mit V-ing
I must have been ventilating you must have been ventilating he must have been ventilating we must have been ventilating you must have been ventilating they must have been ventilating
Negation
Einfache Form
I mustn't ventilate you mustn't ventilate he mustn't ventilate we mustn't ventilate you mustn't ventilate they mustn't ventilate
Form mit V-ing
I mustn't be ventilating you mustn't be ventilating he mustn't be ventilating we mustn't be ventilating you mustn't be ventilating they mustn't be ventilating
Perfekt
I mustn't have ventilated you mustn't have ventilated he mustn't have ventilated we mustn't have ventilated you mustn't have ventilated they mustn't have ventilated
Perfekt mit V-ing
I mustn't have been ventilating you mustn't have been ventilating he mustn't have been ventilating we mustn't have been ventilating you mustn't have been ventilating they mustn't have been ventilating
Fragende Form
Einfache Form
must I ventilate? must you ventilate? must he ventilate? must we ventilate? must you ventilate? must they ventilate?
Form mit V-ing
must I be ventilating? must you be ventilating? must he be ventilating? must we be ventilating? must you be ventilating? must they be ventilating?
Perfekt
must I have ventilated? must you have ventilated? must he have ventilated? must we have ventilated? must you have ventilated? must they have ventilated?
Perfekt mit V-ing
must I have been ventilating? must you have been ventilating? must he have been ventilating? must we have been ventilating? must you have been ventilating? must they have been ventilating?
Fragende Negation Form
Einfache Form
mustn't I ventilate? mustn't you ventilate? mustn't he ventilate? mustn't we ventilate? mustn't you ventilate? mustn't they ventilate?
Form mit V-ing
mustn't I be ventilating? mustn't you be ventilating? mustn't he be ventilating? mustn't we be ventilating? mustn't you be ventilating? mustn't they be ventilating?
Perfekt
mustn't I have ventilated? mustn't you have ventilated? mustn't he have ventilated? mustn't we have ventilated? mustn't you have ventilated? mustn't they have ventilated?
Perfekt mit V-ing
mustn't I have been ventilating? mustn't you have been ventilating? mustn't he have been ventilating? mustn't we have been ventilating? mustn't you have been ventilating? mustn't they have been ventilating?