should background
Verbe régulier : background - backgrounded- backgrounded

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should background
you should background
she should background
we should background
you should background
they should background 	I should be backgrounding
you should be backgrounding
she should be backgrounding
we should be backgrounding
you should be backgrounding
they should be backgrounding	I should have backgrounded
you should have backgrounded
she should have backgrounded
we should have backgrounded
you should have backgrounded
they should have backgrounded	I should have been backgrounding
you should have been backgrounding
she should have been backgrounding
we should have been backgrounding
you should have been backgrounding
they should have been backgrounding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I should not background
you should not background
she should not background
we should not background
you should not background
they should not background 	I should not be backgrounding
you should not be backgrounding
she should not be backgrounding
we should not be backgrounding
you should not be backgrounding
they should not be backgrounding	I should not have backgrounded
you should not have backgrounded
she should not have backgrounded
we should not have backgrounded
you should not have backgrounded
they should not have backgrounded	I should not have been backgrounding
you should not have been backgrounding
she should not have been backgrounding
we should not have been backgrounding
you should not have been backgrounding
they should not have been backgrounding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I background?
should you background?
should she background?
should we background?
should you background?
should they background? 	should I be backgrounding?
should you be backgrounding?
should she be backgrounding?
should we be backgrounding?
should you be backgrounding?
should they be backgrounding? 	should I have backgrounded?
should you have backgrounded?
should she have backgrounded?
should we have backgrounded?
should you have backgrounded?
should they have backgrounded? 	should I have been backgrounding?
should you have been backgrounding?
should she have been backgrounding?
should we have been backgrounding?
should you have been backgrounding?
should they have been backgrounding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
should I not background?
should you not background?
should she not background?
should we not background?
should you not background?
should they not background? 	should I not be backgrounding?
should you not be backgrounding?
should she not be backgrounding?
should we not be backgrounding?
should you not be backgrounding?
should they not be backgrounding? 	should I not have backgrounded?
should you not have backgrounded?
should she not have backgrounded?
should we not have backgrounded?
should you not have backgrounded?
should they not have backgrounded? 	should I not have been backgrounding?
should you not have been backgrounding?
should she not have been backgrounding?
should we not have been backgrounding?
should you not have been backgrounding?
should they not have been backgrounding?