I'd use you'd use she'd use we'd use you'd use they'd use
Forma con V-ing
I'd be using you'd be using she'd be using we'd be using you'd be using they'd be using
Perfecto
I should've used you should've used she should've used we should've used you should've used they should've used
Perfecto con V-ing
I should've been using you should've been using she should've been using we should've been using you should've been using they should've been using
Negación
Forma simple
I shouldn't use you shouldn't use she shouldn't use we shouldn't use you shouldn't use they shouldn't use
Forma con V-ing
I shouldn't be using you shouldn't be using she shouldn't be using we shouldn't be using you shouldn't be using they shouldn't be using
Perfecto
I shouldn't have used you shouldn't have used she shouldn't have used we shouldn't have used you shouldn't have used they shouldn't have used
Perfecto con V-ing
I shouldn't have been using you shouldn't have been using she shouldn't have been using we shouldn't have been using you shouldn't have been using they shouldn't have been using
Forma interrogativa
Forma simple
should I use? should you use? should she use? should we use? should you use? should they use?
Forma con V-ing
should I be using? should you be using? should she be using? should we be using? should you be using? should they be using?
Perfecto
should I have used? should you have used? should she have used? should we have used? should you have used? should they have used?
Perfecto con V-ing
should I have been using? should you have been using? should she have been using? should we have been using? should you have been using? should they have been using?
Forma interro-negativa
Forma simple
shouldn't I use? shouldn't you use? shouldn't she use? shouldn't we use? shouldn't you use? shouldn't they use?
Forma con V-ing
shouldn't I be using? shouldn't you be using? shouldn't she be using? shouldn't we be using? shouldn't you be using? shouldn't they be using?
Perfecto
shouldn't I have used? shouldn't you have used? shouldn't she have used? shouldn't we have used? shouldn't you have used? shouldn't they have used?
Perfecto con V-ing
shouldn't I have been using? shouldn't you have been using? shouldn't she have been using? shouldn't we have been using? shouldn't you have been using? shouldn't they have been using?