Conjugação do verbo inglês COULD FAIL

Verbo regular: fail - failed - failed

Afirmação

Forma simple

I could fail
you could fail
she could fail
we could fail
you could fail
they could fail

Forma com V-ing

I could be failing
you could be failing
she could be failing
we could be failing
you could be failing
they could be failing

Perfeito

I could have failed
you could have failed
she could have failed
we could have failed
you could have failed
they could have failed

Perfeito com V-ing

I could have been failing
you could have been failing
she could have been failing
we could have been failing
you could have been failing
they could have been failing

Negação

Forma simple

I couldn't fail
you couldn't fail
she couldn't fail
we couldn't fail
you couldn't fail
they couldn't fail

Forma com V-ing

I couldn't be failing
you couldn't be failing
she couldn't be failing
we couldn't be failing
you couldn't be failing
they couldn't be failing

Perfeito

I couldn't have failed
you couldn't have failed
she couldn't have failed
we couldn't have failed
you couldn't have failed
they couldn't have failed

Perfeito com V-ing

I couldn't have been failing
you couldn't have been failing
she couldn't have been failing
we couldn't have been failing
you couldn't have been failing
they couldn't have been failing

Forma interrogativa

Forma simple

could I fail?
could you fail?
could she fail?
could we fail?
could you fail?
could they fail?

Forma com V-ing

could I be failing?
could you be failing?
could she be failing?
could we be failing?
could you be failing?
could they be failing?

Perfeito

could I have failed?
could you have failed?
could she have failed?
could we have failed?
could you have failed?
could they have failed?

Perfeito com V-ing

could I have been failing?
could you have been failing?
could she have been failing?
could we have been failing?
could you have been failing?
could they have been failing?

Forma interro-Negação

Forma simple

couldn't I fail?
couldn't you fail?
couldn't she fail?
couldn't we fail?
couldn't you fail?
couldn't they fail?

Forma com V-ing

couldn't I be failing?
couldn't you be failing?
couldn't she be failing?
couldn't we be failing?
couldn't you be failing?
couldn't they be failing?

Perfeito

couldn't I have failed?
couldn't you have failed?
couldn't she have failed?
couldn't we have failed?
couldn't you have failed?
couldn't they have failed?

Perfeito com V-ing

couldn't I have been failing?
couldn't you have been failing?
couldn't she have been failing?
couldn't we have been failing?
couldn't you have been failing?
couldn't they have been failing?

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