must doubt
Regelmä&szlig;iges Verb: doubt - doubted- doubted

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must doubt
you must doubt
he must doubt
we must doubt
you must doubt
they must doubt 	I must be doubting
you must be doubting
he must be doubting
we must be doubting
you must be doubting
they must be doubting	I must have doubted
you must have doubted
he must have doubted
we must have doubted
you must have doubted
they must have doubted	I must have been doubting
you must have been doubting
he must have been doubting
we must have been doubting
you must have been doubting
they must have been doubting	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I mustn't doubt
you mustn't doubt
he mustn't doubt
we mustn't doubt
you mustn't doubt
they mustn't doubt 	I mustn't be doubting
you mustn't be doubting
he mustn't be doubting
we mustn't be doubting
you mustn't be doubting
they mustn't be doubting	I mustn't have doubted
you mustn't have doubted
he mustn't have doubted
we mustn't have doubted
you mustn't have doubted
they mustn't have doubted	I mustn't have been doubting
you mustn't have been doubting
he mustn't have been doubting
we mustn't have been doubting
you mustn't have been doubting
they mustn't have been doubting	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I doubt?
must you doubt?
must he doubt?
must we doubt?
must you doubt?
must they doubt? 	must I be doubting?
must you be doubting?
must he be doubting?
must we be doubting?
must you be doubting?
must they be doubting? 	must I have doubted?
must you have doubted?
must he have doubted?
must we have doubted?
must you have doubted?
must they have doubted? 	must I have been doubting?
must you have been doubting?
must he have been doubting?
must we have been doubting?
must you have been doubting?
must they have been doubting? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
mustn't I doubt?
mustn't you doubt?
mustn't he doubt?
mustn't we doubt?
mustn't you doubt?
mustn't they doubt? 	mustn't I be doubting?
mustn't you be doubting?
mustn't he be doubting?
mustn't we be doubting?
mustn't you be doubting?
mustn't they be doubting? 	mustn't I have doubted?
mustn't you have doubted?
mustn't he have doubted?
mustn't we have doubted?
mustn't you have doubted?
mustn't they have doubted? 	mustn't I have been doubting?
mustn't you have been doubting?
mustn't he have been doubting?
mustn't we have been doubting?
mustn't you have been doubting?
mustn't they have been doubting?