must purchase
Verbo regolare: purchase - purchased- purchased

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must purchase
you must purchase
he must purchase
we must purchase
you must purchase
they must purchase 	I must be purchasing
you must be purchasing
he must be purchasing
we must be purchasing
you must be purchasing
they must be purchasing	I must have purchased
you must have purchased
he 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
he must have been purchasing
we must have been purchasing
you must have been purchasing
they must have been purchasing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't purchase
you mustn't purchase
he mustn't purchase
we mustn't purchase
you mustn't purchase
they mustn't purchase 	I mustn't be purchasing
you mustn't be purchasing
he mustn't be purchasing
we mustn't be purchasing
you mustn't be purchasing
they mustn't be purchasing	I mustn't have purchased
you mustn't have purchased
he mustn't have purchased
we mustn't have purchased
you mustn't have purchased
they mustn't have purchased	I mustn't have been purchasing
you mustn't have been purchasing
he mustn't have been purchasing
we mustn't have been purchasing
you mustn't have been purchasing
they mustn't have been purchasing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I purchase?
must you purchase?
must he purchase?
must we purchase?
must you purchase?
must they purchase? 	must I be purchasing?
must you be purchasing?
must he be purchasing?
must we be purchasing?
must you be purchasing?
must they be purchasing? 	must I have purchased?
must you have purchased?
must he 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 he have been purchasing?
must we have been purchasing?
must you have been purchasing?
must they have been purchasing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I purchase?
mustn't you purchase?
mustn't he purchase?
mustn't we purchase?
mustn't you purchase?
mustn't they purchase? 	mustn't I be purchasing?
mustn't you be purchasing?
mustn't he be purchasing?
mustn't we be purchasing?
mustn't you be purchasing?
mustn't they be purchasing? 	mustn't I have purchased?
mustn't you have purchased?
mustn't he have purchased?
mustn't we have purchased?
mustn't you have purchased?
mustn't they have purchased? 	mustn't I have been purchasing?
mustn't you have been purchasing?
mustn't he have been purchasing?
mustn't we have been purchasing?
mustn't you have been purchasing?
mustn't they have been purchasing?