I can fax you can fax she can fax we can fax you can fax they can fax
Forma com V-ing
I can be faxing you can be faxing she can be faxing we can be faxing you can be faxing they can be faxing
Perfeito
I can have faxed you can have faxed she can have faxed we can have faxed you can have faxed they can have faxed
Perfeito com V-ing
I can have been faxing you can have been faxing she can have been faxing we can have been faxing you can have been faxing they can have been faxing
Negação
Forma simple
I can't fax you can't fax she can't fax we can't fax you can't fax they can't fax
Forma com V-ing
I can't be faxing you can't be faxing she can't be faxing we can't be faxing you can't be faxing they can't be faxing
Perfeito
I can't have faxed you can't have faxed she can't have faxed we can't have faxed you can't have faxed they can't have faxed
Perfeito com V-ing
I can't have been faxing you can't have been faxing she can't have been faxing we can't have been faxing you can't have been faxing they can't have been faxing
Forma interrogativa
Forma simple
can I fax? can you fax? can she fax? can we fax? can you fax? can they fax?
Forma com V-ing
can I be faxing? can you be faxing? can she be faxing? can we be faxing? can you be faxing? can they be faxing?
Perfeito
can I have faxed? can you have faxed? can she have faxed? can we have faxed? can you have faxed? can they have faxed?
Perfeito com V-ing
can I have been faxing? can you have been faxing? can she have been faxing? can we have been faxing? can you have been faxing? can they have been faxing?
Forma interro-Negação
Forma simple
can't I fax? can't you fax? can't she fax? can't we fax? can't you fax? can't they fax?
Forma com V-ing
can't I be faxing? can't you be faxing? can't she be faxing? can't we be faxing? can't you be faxing? can't they be faxing?
Perfeito
can't I have faxed? can't you have faxed? can't she have faxed? can't we have faxed? can't you have faxed? can't they have faxed?
Perfeito com V-ing
can't I have been faxing? can't you have been faxing? can't she have been faxing? can't we have been faxing? can't you have been faxing? can't they have been faxing?