I should preface you should preface she should preface we should preface you should preface they should preface
V-ing form
I should be prefacing you should be prefacing she should be prefacing we should be prefacing you should be prefacing they should be prefacing
Perfect
I should have prefaced you should have prefaced she should have prefaced we should have prefaced you should have prefaced they should have prefaced
V-ing perfect
I should have been prefacing you should have been prefacing she should have been prefacing we should have been prefacing you should have been prefacing they should have been prefacing
Negation
Simple form
I should not preface you should not preface she should not preface we should not preface you should not preface they should not preface
V-ing form
I should not be prefacing you should not be prefacing she should not be prefacing we should not be prefacing you should not be prefacing they should not be prefacing
Perfect
I should not have prefaced you should not have prefaced she should not have prefaced we should not have prefaced you should not have prefaced they should not have prefaced
V-ing perfect
I should not have been prefacing you should not have been prefacing she should not have been prefacing we should not have been prefacing you should not have been prefacing they should not have been prefacing
Interrogative form
Simple form
should I preface? should you preface? should she preface? should we preface? should you preface? should they preface?
V-ing form
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?
V-ing perfect
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?
Interro-negative form
Simple form
should I not preface? should you not preface? should she not preface? should we not preface? should you not preface? should they not preface?
V-ing form
should I not be prefacing? should you not be prefacing? should she not be prefacing? should we not be prefacing? should you not be prefacing? should they not be prefacing?
Perfect
should I not have prefaced? should you not have prefaced? should she not have prefaced? should we not have prefaced? should you not have prefaced? should they not have prefaced?
V-ing perfect
should I not have been prefacing? should you not have been prefacing? should she not have been prefacing? should we not have been prefacing? should you not have been prefacing? should they not have been prefacing?