must purchase
Regelmä&szlig;iges Verb: purchase - purchased- purchased

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must purchase
you must purchase
she must purchase
we must purchase
you must purchase
they must purchase 	I must be purchasing
you must be purchasing
she must be purchasing
we must be purchasing
you must be purchasing
they must be purchasing	I must have purchased
you must have purchased
she must have purchased
we must have purchased
you must have purchased
they must have purchased	I must have been purchasing
you must have been purchasing
she must have been purchasing
we must have been purchasing
you must have been purchasing
they must have been purchasing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I must not purchase
you must not purchase
she must not purchase
we must not purchase
you must not purchase
they must not purchase 	I must not be purchasing
you must not be purchasing
she must not be purchasing
we must not be purchasing
you must not be purchasing
they must not be purchasing	I must not have purchased
you must not have purchased
she must not have purchased
we must not have purchased
you must not have purchased
they must not have purchased	I must not have been purchasing
you must not have been purchasing
she must not have been purchasing
we must not have been purchasing
you must not have been purchasing
they must not have been purchasing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I purchase?
must you purchase?
must she purchase?
must we purchase?
must you purchase?
must they purchase? 	must I be purchasing?
must you be purchasing?
must she be purchasing?
must we be purchasing?
must you be purchasing?
must they be purchasing? 	must I have purchased?
must you have purchased?
must she have purchased?
must we have purchased?
must you have purchased?
must they have purchased? 	must I have been purchasing?
must you have been purchasing?
must she have been purchasing?
must we have been purchasing?
must you have been purchasing?
must they have been purchasing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
must I not purchase?
must you not purchase?
must she not purchase?
must we not purchase?
must you not purchase?
must they not purchase? 	must I not be purchasing?
must you not be purchasing?
must she not be purchasing?
must we not be purchasing?
must you not be purchasing?
must they not be purchasing? 	must I not have purchased?
must you not have purchased?
must she not have purchased?
must we not have purchased?
must you not have purchased?
must they not have purchased? 	must I not have been purchasing?
must you not have been purchasing?
must she not have been purchasing?
must we not have been purchasing?
must you not have been purchasing?
must they not have been purchasing?