I'd be prefacing you'd be prefacing she'd be prefacing we'd be prefacing you'd be prefacing they'd be prefacing
Perfect
I should've prefaced you should've prefaced she should've prefaced we should've prefaced you should've prefaced they should've prefaced
Perfect en V-ing
I should've been prefacing you should've been prefacing she should've been prefacing we should've been prefacing you should've been prefacing they should've been prefacing
Négation
Forme simple
I shouldn't preface you shouldn't preface she shouldn't preface we shouldn't preface you shouldn't preface they shouldn't preface
Forme en V-ing
I shouldn't be prefacing you shouldn't be prefacing she shouldn't be prefacing we shouldn't be prefacing you shouldn't be prefacing they shouldn't be prefacing
Perfect
I shouldn't have prefaced you shouldn't have prefaced she shouldn't have prefaced we shouldn't have prefaced you shouldn't have prefaced they shouldn't have prefaced
Perfect en V-ing
I shouldn't have been prefacing you shouldn't have been prefacing she shouldn't have been prefacing we shouldn't have been prefacing you shouldn't have been prefacing they shouldn't have been prefacing
Forme interrogative
Forme simple
should I preface? should you preface? should she preface? should we preface? should you preface? should they preface?
Forme en V-ing
should I be prefacing? should you be prefacing? should she be prefacing? should we be prefacing? should you be prefacing? should they be prefacing?
Perfect
should I have prefaced? should you have prefaced? should she have prefaced? should we have prefaced? should you have prefaced? should they have prefaced?
Perfect en V-ing
should I have been prefacing? should you have been prefacing? should she have been prefacing? should we have been prefacing? should you have been prefacing? should they have been prefacing?
Forme interro-négative
Forme simple
shouldn't I preface? shouldn't you preface? shouldn't she preface? shouldn't we preface? shouldn't you preface? shouldn't they preface?
Forme en V-ing
shouldn't I be prefacing? shouldn't you be prefacing? shouldn't she be prefacing? shouldn't we be prefacing? shouldn't you be prefacing? shouldn't they be prefacing?
Perfect
shouldn't I have prefaced? shouldn't you have prefaced? shouldn't she have prefaced? shouldn't we have prefaced? shouldn't you have prefaced? shouldn't they have prefaced?
Perfect en V-ing
shouldn't I have been prefacing? shouldn't you have been prefacing? shouldn't she have been prefacing? shouldn't we have been prefacing? shouldn't you have been prefacing? shouldn't they have been prefacing?