must economize
Verbe régulier : economize - economized- economized
Traduction française : économiser - faire des économies 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must economize
you must economize
he must economize
we must economize
you must economize
they must economize 	I must be economizing
you must be economizing
he must be economizing
we must be economizing
you must be economizing
they must be economizing	I must have economized
you must have economized
he must have economized
we must have economized
you must have economized
they must have economized	I must have been economizing
you must have been economizing
he must have been economizing
we must have been economizing
you must have been economizing
they must have been economizing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't economize
you mustn't economize
he mustn't economize
we mustn't economize
you mustn't economize
they mustn't economize 	I mustn't be economizing
you mustn't be economizing
he mustn't be economizing
we mustn't be economizing
you mustn't be economizing
they mustn't be economizing	I mustn't have economized
you mustn't have economized
he mustn't have economized
we mustn't have economized
you mustn't have economized
they mustn't have economized	I mustn't have been economizing
you mustn't have been economizing
he mustn't have been economizing
we mustn't have been economizing
you mustn't have been economizing
they mustn't have been economizing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I economize?
must you economize?
must he economize?
must we economize?
must you economize?
must they economize? 	must I be economizing?
must you be economizing?
must he be economizing?
must we be economizing?
must you be economizing?
must they be economizing? 	must I have economized?
must you have economized?
must he have economized?
must we have economized?
must you have economized?
must they have economized? 	must I have been economizing?
must you have been economizing?
must he have been economizing?
must we have been economizing?
must you have been economizing?
must they have been economizing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I economize?
mustn't you economize?
mustn't he economize?
mustn't we economize?
mustn't you economize?
mustn't they economize? 	mustn't I be economizing?
mustn't you be economizing?
mustn't he be economizing?
mustn't we be economizing?
mustn't you be economizing?
mustn't they be economizing? 	mustn't I have economized?
mustn't you have economized?
mustn't he have economized?
mustn't we have economized?
mustn't you have economized?
mustn't they have economized? 	mustn't I have been economizing?
mustn't you have been economizing?
mustn't he have been economizing?
mustn't we have been economizing?
mustn't you have been economizing?
mustn't they have been economizing?