Conjugação do verbo inglês
COULD FAX

Verbo regular: fax - faxed - faxed

Afirmação

Forma simple	Forma com V-ing
I could fax you could fax she could fax we could fax you could fax they could fax	I could be faxing you could be faxing she could be faxing we could be faxing you could be faxing they could be faxing
Perfeito	Perfeito com V-ing
I could have faxed you could have faxed she could have faxed we could have faxed you could have faxed they could have faxed	I could have been faxing you could have been faxing she could have been faxing we could have been faxing you could have been faxing they could have been faxing

Negação

Forma simple	Forma com V-ing
I couldn't fax you couldn't fax she couldn't fax we couldn't fax you couldn't fax they couldn't fax	I couldn't be faxing you couldn't be faxing she couldn't be faxing we couldn't be faxing you couldn't be faxing they couldn't be faxing
Perfeito	Perfeito com V-ing
I couldn't have faxed you couldn't have faxed she couldn't have faxed we couldn't have faxed you couldn't have faxed they couldn't have faxed	I couldn't have been faxing you couldn't have been faxing she couldn't have been faxing we couldn't have been faxing you couldn't have been faxing they couldn't have been faxing

Forma interrogativa

Forma simple	Forma com V-ing
could I fax? could you fax? could she fax? could we fax? could you fax? could they fax?	could I be faxing? could you be faxing? could she be faxing? could we be faxing? could you be faxing? could they be faxing?
Perfeito	Perfeito com V-ing
could I have faxed? could you have faxed? could she have faxed? could we have faxed? could you have faxed? could they have faxed?	could I have been faxing? could you have been faxing? could she have been faxing? could we have been faxing? could you have been faxing? could they have been faxing?

Forma interro-Negação

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