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masculino | Modal : no | may | might | can | could | shall | should | will | would | must | ought to

Conjugación del verbo inglés COULD FAIL

Verbo regular: fail - failed - failed


Afirmación

Forma simple
I could fail
you could fail
she could fail
we could fail
you could fail
they could fail
Forma con 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
Perfecto
I could have failed
you could have failed
she could have failed
we could have failed
you could have failed
they could have failed
Perfecto con 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

Negación

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 con 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
Perfecto
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
Perfecto con 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 con 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?
Perfecto
could I have failed?
could you have failed?
could she have failed?
could we have failed?
could you have failed?
could they have failed?
Perfecto con 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-negativa

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 con 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?
Perfecto
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?
Perfecto con 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?