must sum
Regelmä&szlig;iges Verb: sum - summed- summed

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must sum
you must sum
he must sum
we must sum
you must sum
they must sum 	I must be summing
you must be summing
he must be summing
we must be summing
you must be summing
they must be summing	I must have summed
you must have summed
he must have summed
we must have summed
you must have summed
they must have summed	I must have been summing
you must have been summing
he must have been summing
we must have been summing
you must have been summing
they must have been summing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I mustn't sum
you mustn't sum
he mustn't sum
we mustn't sum
you mustn't sum
they mustn't sum 	I mustn't be summing
you mustn't be summing
he mustn't be summing
we mustn't be summing
you mustn't be summing
they mustn't be summing	I mustn't have summed
you mustn't have summed
he mustn't have summed
we mustn't have summed
you mustn't have summed
they mustn't have summed	I mustn't have been summing
you mustn't have been summing
he mustn't have been summing
we mustn't have been summing
you mustn't have been summing
they mustn't have been summing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I sum?
must you sum?
must he sum?
must we sum?
must you sum?
must they sum? 	must I be summing?
must you be summing?
must he be summing?
must we be summing?
must you be summing?
must they be summing? 	must I have summed?
must you have summed?
must he have summed?
must we have summed?
must you have summed?
must they have summed? 	must I have been summing?
must you have been summing?
must he have been summing?
must we have been summing?
must you have been summing?
must they have been summing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
mustn't I sum?
mustn't you sum?
mustn't he sum?
mustn't we sum?
mustn't you sum?
mustn't they sum? 	mustn't I be summing?
mustn't you be summing?
mustn't he be summing?
mustn't we be summing?
mustn't you be summing?
mustn't they be summing? 	mustn't I have summed?
mustn't you have summed?
mustn't he have summed?
mustn't we have summed?
mustn't you have summed?
mustn't they have summed? 	mustn't I have been summing?
mustn't you have been summing?
mustn't he have been summing?
mustn't we have been summing?
mustn't you have been summing?
mustn't they have been summing?