may upgrade
Verbe régulier : upgrade - upgraded- upgraded
Traduction française : améliorer - passer à un système plus puissant 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may upgrade
you may upgrade
he may upgrade
we may upgrade
you may upgrade
they may upgrade 	I may be upgrading
you may be upgrading
he may be upgrading
we may be upgrading
you may be upgrading
they may be upgrading	I may have upgraded
you may have upgraded
he may have upgraded
we may have upgraded
you may have upgraded
they may have upgraded	I may have been upgrading
you may have been upgrading
he may have been upgrading
we may have been upgrading
you may have been upgrading
they may have been upgrading	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may not upgrade
you may not upgrade
he may not upgrade
we may not upgrade
you may not upgrade
they may not upgrade 	I may not be upgrading
you may not be upgrading
he may not be upgrading
we may not be upgrading
you may not be upgrading
they may not be upgrading	I may not have upgraded
you may not have upgraded
he may not have upgraded
we may not have upgraded
you may not have upgraded
they may not have upgraded	I may not have been upgrading
you may not have been upgrading
he may not have been upgrading
we may not have been upgrading
you may not have been upgrading
they may not have been upgrading	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I upgrade?
may you upgrade?
may he upgrade?
may we upgrade?
may you upgrade?
may they upgrade? 	may I be upgrading?
may you be upgrading?
may he be upgrading?
may we be upgrading?
may you be upgrading?
may they be upgrading? 	may I have upgraded?
may you have upgraded?
may he have upgraded?
may we have upgraded?
may you have upgraded?
may they have upgraded? 	may I have been upgrading?
may you have been upgrading?
may he have been upgrading?
may we have been upgrading?
may you have been upgrading?
may they have been upgrading? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I not upgrade?
may you not upgrade?
may he not upgrade?
may we not upgrade?
may you not upgrade?
may they not upgrade? 	may I not be upgrading?
may you not be upgrading?
may he not be upgrading?
may we not be upgrading?
may you not be upgrading?
may they not be upgrading? 	may I not have upgraded?
may you not have upgraded?
may he not have upgraded?
may we not have upgraded?
may you not have upgraded?
may they not have upgraded? 	may I not have been upgrading?
may you not have been upgrading?
may he not have been upgrading?
may we not have been upgrading?
may you not have been upgrading?
may they not have been upgrading?