must author
Regelmä&szlig;iges Verb: author - authored- authored

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must author
you must author
she must author
we must author
you must author
they must author 	I must be authoring
you must be authoring
she must be authoring
we must be authoring
you must be authoring
they must be authoring	I must have authored
you must have authored
she must have authored
we must have authored
you must have authored
they must have authored	I must have been authoring
you must have been authoring
she must have been authoring
we must have been authoring
you must have been authoring
they must have been authoring	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not author
you must not author
she must not author
we must not author
you must not author
they must not author 	I must not be authoring
you must not be authoring
she must not be authoring
we must not be authoring
you must not be authoring
they must not be authoring	I must not have authored
you must not have authored
she must not have authored
we must not have authored
you must not have authored
they must not have authored	I must not have been authoring
you must not have been authoring
she must not have been authoring
we must not have been authoring
you must not have been authoring
they must not have been authoring	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I author?
must you author?
must she author?
must we author?
must you author?
must they author? 	must I be authoring?
must you be authoring?
must she be authoring?
must we be authoring?
must you be authoring?
must they be authoring? 	must I have authored?
must you have authored?
must she have authored?
must we have authored?
must you have authored?
must they have authored? 	must I have been authoring?
must you have been authoring?
must she have been authoring?
must we have been authoring?
must you have been authoring?
must they have been authoring? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not author?
must you not author?
must she not author?
must we not author?
must you not author?
must they not author? 	must I not be authoring?
must you not be authoring?
must she not be authoring?
must we not be authoring?
must you not be authoring?
must they not be authoring? 	must I not have authored?
must you not have authored?
must she not have authored?
must we not have authored?
must you not have authored?
must they not have authored? 	must I not have been authoring?
must you not have been authoring?
must she not have been authoring?
must we not have been authoring?
must you not have been authoring?
must they not have been authoring?