I can preface you can preface he can preface we can preface you can preface they can preface
Forma con V-ing
I can be prefacing you can be prefacing he can be prefacing we can be prefacing you can be prefacing they can be prefacing
Perfetto
I can have prefaced you can have prefaced he can have prefaced we can have prefaced you can have prefaced they can have prefaced
Perfetto con V-ing
I can have been prefacing you can have been prefacing he can have been prefacing we can have been prefacing you can have been prefacing they can have been prefacing
Negazione
Forma semplice
I cannot preface you cannot preface he cannot preface we cannot preface you cannot preface they cannot preface
Forma con V-ing
I cannot be prefacing you cannot be prefacing he cannot be prefacing we cannot be prefacing you cannot be prefacing they cannot be prefacing
Perfetto
I cannot have prefaced you cannot have prefaced he cannot have prefaced we cannot have prefaced you cannot have prefaced they cannot have prefaced
Perfetto con V-ing
I cannot have been prefacing you cannot have been prefacing he cannot have been prefacing we cannot have been prefacing you cannot have been prefacing they cannot have been prefacing
Forma interrogativa
Forma semplice
can I preface? can you preface? can he preface? can we preface? can you preface? can they preface?
Forma con V-ing
can I be prefacing? can you be prefacing? can he be prefacing? can we be prefacing? can you be prefacing? can they be prefacing?
Perfetto
can I have prefaced? can you have prefaced? can he have prefaced? can we have prefaced? can you have prefaced? can they have prefaced?
Perfetto con V-ing
can I have been prefacing? can you have been prefacing? can he have been prefacing? can we have been prefacing? can you have been prefacing? can they have been prefacing?
Forma interro-negativa
Forma semplice
can I not preface? can you not preface? can he not preface? can we not preface? can you not preface? can they not preface?
Forma con V-ing
can I not be prefacing? can you not be prefacing? can he not be prefacing? can we not be prefacing? can you not be prefacing? can they not be prefacing?
Perfetto
can I not have prefaced? can you not have prefaced? can he not have prefaced? can we not have prefaced? can you not have prefaced? can they not have prefaced?
Perfetto con V-ing
can I not have been prefacing? can you not have been prefacing? can he not have been prefacing? can we not have been prefacing? can you not have been prefacing? can they not have been prefacing?