Conjugação do verbo inglês
COULD PREVIEW

Verbo regular: preview - previewed - previewed

Afirmação

Forma simple	Forma com V-ing
I could preview you could preview she could preview we could preview you could preview they could preview	I could be previewing you could be previewing she could be previewing we could be previewing you could be previewing they could be previewing
Perfeito	Perfeito com V-ing
I could have previewed you could have previewed she could have previewed we could have previewed you could have previewed they could have previewed	I could have been previewing you could have been previewing she could have been previewing we could have been previewing you could have been previewing they could have been previewing

Negação

Forma simple	Forma com V-ing
I could not preview you could not preview she could not preview we could not preview you could not preview they could not preview	I could not be previewing you could not be previewing she could not be previewing we could not be previewing you could not be previewing they could not be previewing
Perfeito	Perfeito com V-ing
I could not have previewed you could not have previewed she could not have previewed we could not have previewed you could not have previewed they could not have previewed	I could not have been previewing you could not have been previewing she could not have been previewing we could not have been previewing you could not have been previewing they could not have been previewing

Forma interrogativa

Forma simple	Forma com V-ing
could I preview? could you preview? could she preview? could we preview? could you preview? could they preview?	could I be previewing? could you be previewing? could she be previewing? could we be previewing? could you be previewing? could they be previewing?
Perfeito	Perfeito com V-ing
could I have previewed? could you have previewed? could she have previewed? could we have previewed? could you have previewed? could they have previewed?	could I have been previewing? could you have been previewing? could she have been previewing? could we have been previewing? could you have been previewing? could they have been previewing?

Forma interro-Negação

Forma simple	Forma com V-ing
could I not preview? could you not preview? could she not preview? could we not preview? could you not preview? could they not preview?	could I not be previewing? could you not be previewing? could she not be previewing? could we not be previewing? could you not be previewing? could they not be previewing?
Perfeito	Perfeito com V-ing
could I not have previewed? could you not have previewed? could she not have previewed? could we not have previewed? could you not have previewed? could they not have previewed?	could I not have been previewing? could you not have been previewing? could she not have been previewing? could we not have been previewing? could you not have been previewing? could they not have been previewing?