must base
Regelmä&szlig;iges Verb: base - based- based

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must base
you must base
she must base
we must base
you must base
they must base 	I must be basing
you must be basing
she must be basing
we must be basing
you must be basing
they must be basing	I must have based
you must have based
she must have based
we must have based
you must have based
they must have based	I must have been basing
you must have been basing
she must have been basing
we must have been basing
you must have been basing
they must have been basing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not base
you must not base
she must not base
we must not base
you must not base
they must not base 	I must not be basing
you must not be basing
she must not be basing
we must not be basing
you must not be basing
they must not be basing	I must not have based
you must not have based
she must not have based
we must not have based
you must not have based
they must not have based	I must not have been basing
you must not have been basing
she must not have been basing
we must not have been basing
you must not have been basing
they must not have been basing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I base?
must you base?
must she base?
must we base?
must you base?
must they base? 	must I be basing?
must you be basing?
must she be basing?
must we be basing?
must you be basing?
must they be basing? 	must I have based?
must you have based?
must she have based?
must we have based?
must you have based?
must they have based? 	must I have been basing?
must you have been basing?
must she have been basing?
must we have been basing?
must you have been basing?
must they have been basing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not base?
must you not base?
must she not base?
must we not base?
must you not base?
must they not base? 	must I not be basing?
must you not be basing?
must she not be basing?
must we not be basing?
must you not be basing?
must they not be basing? 	must I not have based?
must you not have based?
must she not have based?
must we not have based?
must you not have based?
must they not have based? 	must I not have been basing?
must you not have been basing?
must she not have been basing?
must we not have been basing?
must you not have been basing?
must they not have been basing?