I can refer you can refer he can refer we can refer you can refer they can refer
Forma con V-ing
I can be referring you can be referring he can be referring we can be referring you can be referring they can be referring
Perfetto
I can have referred you can have referred he can have referred we can have referred you can have referred they can have referred
Perfetto con V-ing
I can have been referring you can have been referring he can have been referring we can have been referring you can have been referring they can have been referring
Negazione
Forma semplice
I can't refer you can't refer he can't refer we can't refer you can't refer they can't refer
Forma con V-ing
I can't be referring you can't be referring he can't be referring we can't be referring you can't be referring they can't be referring
Perfetto
I can't have referred you can't have referred he can't have referred we can't have referred you can't have referred they can't have referred
Perfetto con V-ing
I can't have been referring you can't have been referring he can't have been referring we can't have been referring you can't have been referring they can't have been referring
Forma interrogativa
Forma semplice
can I refer? can you refer? can he refer? can we refer? can you refer? can they refer?
Forma con V-ing
can I be referring? can you be referring? can he be referring? can we be referring? can you be referring? can they be referring?
Perfetto
can I have referred? can you have referred? can he have referred? can we have referred? can you have referred? can they have referred?
Perfetto con V-ing
can I have been referring? can you have been referring? can he have been referring? can we have been referring? can you have been referring? can they have been referring?
Forma interro-negativa
Forma semplice
can't I refer? can't you refer? can't he refer? can't we refer? can't you refer? can't they refer?
Forma con V-ing
can't I be referring? can't you be referring? can't he be referring? can't we be referring? can't you be referring? can't they be referring?
Perfetto
can't I have referred? can't you have referred? can't he have referred? can't we have referred? can't you have referred? can't they have referred?
Perfetto con V-ing
can't I have been referring? can't you have been referring? can't he have been referring? can't we have been referring? can't you have been referring? can't they have been referring?