must invest
Regelmä&szlig;iges Verb: invest - invested- invested

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must invest
you must invest
she must invest
we must invest
you must invest
they must invest 	I must be investing
you must be investing
she must be investing
we must be investing
you must be investing
they must be investing	I must have invested
you must have invested
she must have invested
we must have invested
you must have invested
they must have invested	I must have been investing
you must have been investing
she must have been investing
we must have been investing
you must have been investing
they must have been investing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I mustn't invest
you mustn't invest
she mustn't invest
we mustn't invest
you mustn't invest
they mustn't invest 	I mustn't be investing
you mustn't be investing
she mustn't be investing
we mustn't be investing
you mustn't be investing
they mustn't be investing	I mustn't have invested
you mustn't have invested
she mustn't have invested
we mustn't have invested
you mustn't have invested
they mustn't have invested	I mustn't have been investing
you mustn't have been investing
she mustn't have been investing
we mustn't have been investing
you mustn't have been investing
they mustn't have been investing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I invest?
must you invest?
must she invest?
must we invest?
must you invest?
must they invest? 	must I be investing?
must you be investing?
must she be investing?
must we be investing?
must you be investing?
must they be investing? 	must I have invested?
must you have invested?
must she have invested?
must we have invested?
must you have invested?
must they have invested? 	must I have been investing?
must you have been investing?
must she have been investing?
must we have been investing?
must you have been investing?
must they have been investing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
mustn't I invest?
mustn't you invest?
mustn't she invest?
mustn't we invest?
mustn't you invest?
mustn't they invest? 	mustn't I be investing?
mustn't you be investing?
mustn't she be investing?
mustn't we be investing?
mustn't you be investing?
mustn't they be investing? 	mustn't I have invested?
mustn't you have invested?
mustn't she have invested?
mustn't we have invested?
mustn't you have invested?
mustn't they have invested? 	mustn't I have been investing?
mustn't you have been investing?
mustn't she have been investing?
mustn't we have been investing?
mustn't you have been investing?
mustn't they have been investing?