must ventilate
Regelmä&szlig;iges Verb: ventilate - ventilated- ventilated

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must ventilate
you must ventilate
she must ventilate
we must ventilate
you must ventilate
they must ventilate 	I must be ventilating
you must be ventilating
she must be ventilating
we must be ventilating
you must be ventilating
they must be ventilating	I must have ventilated
you must have ventilated
she must have ventilated
we must have ventilated
you must have ventilated
they must have ventilated	I must have been ventilating
you must have been ventilating
she must have been ventilating
we must have been ventilating
you must have been ventilating
they must have been ventilating	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not ventilate
you must not ventilate
she must not ventilate
we must not ventilate
you must not ventilate
they must not ventilate 	I must not be ventilating
you must not be ventilating
she must not be ventilating
we must not be ventilating
you must not be ventilating
they must not be ventilating	I must not have ventilated
you must not have ventilated
she must not have ventilated
we must not have ventilated
you must not have ventilated
they must not have ventilated	I must not have been ventilating
you must not have been ventilating
she must not have been ventilating
we must not have been ventilating
you must not have been ventilating
they must not have been ventilating	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I ventilate?
must you ventilate?
must she ventilate?
must we ventilate?
must you ventilate?
must they ventilate? 	must I be ventilating?
must you be ventilating?
must she be ventilating?
must we be ventilating?
must you be ventilating?
must they be ventilating? 	must I have ventilated?
must you have ventilated?
must she have ventilated?
must we have ventilated?
must you have ventilated?
must they have ventilated? 	must I have been ventilating?
must you have been ventilating?
must she have been ventilating?
must we have been ventilating?
must you have been ventilating?
must they have been ventilating? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not ventilate?
must you not ventilate?
must she not ventilate?
must we not ventilate?
must you not ventilate?
must they not ventilate? 	must I not be ventilating?
must you not be ventilating?
must she not be ventilating?
must we not be ventilating?
must you not be ventilating?
must they not be ventilating? 	must I not have ventilated?
must you not have ventilated?
must she not have ventilated?
must we not have ventilated?
must you not have ventilated?
must they not have ventilated? 	must I not have been ventilating?
must you not have been ventilating?
must she not have been ventilating?
must we not have been ventilating?
must you not have been ventilating?
must they not have been ventilating?