Conjugação do verbo inglês
COULD INVOICE

Verbo regular: invoice - invoiced - invoiced

Afirmação

Forma simple	Forma com V-ing
I could invoice you could invoice she could invoice we could invoice you could invoice they could invoice	I could be invoicing you could be invoicing she could be invoicing we could be invoicing you could be invoicing they could be invoicing
Perfeito	Perfeito com V-ing
I could have invoiced you could have invoiced she could have invoiced we could have invoiced you could have invoiced they could have invoiced	I could have been invoicing you could have been invoicing she could have been invoicing we could have been invoicing you could have been invoicing they could have been invoicing

Negação

Forma simple	Forma com V-ing
I couldn't invoice you couldn't invoice she couldn't invoice we couldn't invoice you couldn't invoice they couldn't invoice	I couldn't be invoicing you couldn't be invoicing she couldn't be invoicing we couldn't be invoicing you couldn't be invoicing they couldn't be invoicing
Perfeito	Perfeito com V-ing
I couldn't have invoiced you couldn't have invoiced she couldn't have invoiced we couldn't have invoiced you couldn't have invoiced they couldn't have invoiced	I couldn't have been invoicing you couldn't have been invoicing she couldn't have been invoicing we couldn't have been invoicing you couldn't have been invoicing they couldn't have been invoicing

Forma interrogativa

Forma simple	Forma com V-ing
could I invoice? could you invoice? could she invoice? could we invoice? could you invoice? could they invoice?	could I be invoicing? could you be invoicing? could she be invoicing? could we be invoicing? could you be invoicing? could they be invoicing?
Perfeito	Perfeito com V-ing
could I have invoiced? could you have invoiced? could she have invoiced? could we have invoiced? could you have invoiced? could they have invoiced?	could I have been invoicing? could you have been invoicing? could she have been invoicing? could we have been invoicing? could you have been invoicing? could they have been invoicing?

Forma interro-Negação

Forma simple	Forma com V-ing
couldn't I invoice? couldn't you invoice? couldn't she invoice? couldn't we invoice? couldn't you invoice? couldn't they invoice?	couldn't I be invoicing? couldn't you be invoicing? couldn't she be invoicing? couldn't we be invoicing? couldn't you be invoicing? couldn't they be invoicing?
Perfeito	Perfeito com V-ing
couldn't I have invoiced? couldn't you have invoiced? couldn't she have invoiced? couldn't we have invoiced? couldn't you have invoiced? couldn't they have invoiced?	couldn't I have been invoicing? couldn't you have been invoicing? couldn't she have been invoicing? couldn't we have been invoicing? couldn't you have been invoicing? couldn't they have been invoicing?