I can author you can author he can author we can author you can author they can author
Forma con V-ing
I can be authoring you can be authoring he can be authoring we can be authoring you can be authoring they can be authoring
Perfetto
I can have authored you can have authored he can have authored we can have authored you can have authored they can have authored
Perfetto con V-ing
I can have been authoring you can have been authoring he can have been authoring we can have been authoring you can have been authoring they can have been authoring
Negazione
Forma semplice
I can't author you can't author he can't author we can't author you can't author they can't author
Forma con V-ing
I can't be authoring you can't be authoring he can't be authoring we can't be authoring you can't be authoring they can't be authoring
Perfetto
I can't have authored you can't have authored he can't have authored we can't have authored you can't have authored they can't have authored
Perfetto con V-ing
I can't have been authoring you can't have been authoring he can't have been authoring we can't have been authoring you can't have been authoring they can't have been authoring
Forma interrogativa
Forma semplice
can I author? can you author? can he author? can we author? can you author? can they author?
Forma con V-ing
can I be authoring? can you be authoring? can he be authoring? can we be authoring? can you be authoring? can they be authoring?
Perfetto
can I have authored? can you have authored? can he have authored? can we have authored? can you have authored? can they have authored?
Perfetto con V-ing
can I have been authoring? can you have been authoring? can he have been authoring? can we have been authoring? can you have been authoring? can they have been authoring?
Forma interro-negativa
Forma semplice
can't I author? can't you author? can't he author? can't we author? can't you author? can't they author?
Forma con V-ing
can't I be authoring? can't you be authoring? can't he be authoring? can't we be authoring? can't you be authoring? can't they be authoring?
Perfetto
can't I have authored? can't you have authored? can't he have authored? can't we have authored? can't you have authored? can't they have authored?
Perfetto con V-ing
can't I have been authoring? can't you have been authoring? can't he have been authoring? can't we have been authoring? can't you have been authoring? can't they have been authoring?