can 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 can upgrade
you can upgrade
he can upgrade
we can upgrade
you can upgrade
they can upgrade 	I can be upgrading
you can be upgrading
he can be upgrading
we can be upgrading
you can be upgrading
they can be upgrading	I can have upgraded
you can have upgraded
he can have upgraded
we can have upgraded
you can have upgraded
they can have upgraded	I can have been upgrading
you can have been upgrading
he can have been upgrading
we can have been upgrading
you can have been upgrading
they can have been upgrading	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I can't upgrade
you can't upgrade
he can't upgrade
we can't upgrade
you can't upgrade
they can't upgrade 	I can't be upgrading
you can't be upgrading
he can't be upgrading
we can't be upgrading
you can't be upgrading
they can't be upgrading	I can't have upgraded
you can't have upgraded
he can't have upgraded
we can't have upgraded
you can't have upgraded
they can't have upgraded	I can't have been upgrading
you can't have been upgrading
he can't have been upgrading
we can't have been upgrading
you can't have been upgrading
they can't have been upgrading	

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

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