Conjugaison du verbe anglais COULD ASCERTAIN

Verbe régulier : ascertain - ascertained - ascertained
Traduction française : établir - constater

Affirmation

Forme simple

I could ascertain
you could ascertain
she could ascertain
we could ascertain
you could ascertain
they could ascertain

Forme en V-ing

I could be ascertaining
you could be ascertaining
she could be ascertaining
we could be ascertaining
you could be ascertaining
they could be ascertaining

Perfect

I could have ascertained
you could have ascertained
she could have ascertained
we could have ascertained
you could have ascertained
they could have ascertained

Perfect en V-ing

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

Négation

Forme simple

I could not ascertain
you could not ascertain
she could not ascertain
we could not ascertain
you could not ascertain
they could not ascertain

Forme en V-ing

I could not be ascertaining
you could not be ascertaining
she could not be ascertaining
we could not be ascertaining
you could not be ascertaining
they could not be ascertaining

Perfect

I could not have ascertained
you could not have ascertained
she could not have ascertained
we could not have ascertained
you could not have ascertained
they could not have ascertained

Perfect en V-ing

I could not have been ascertaining
you could not have been ascertaining
she could not have been ascertaining
we could not have been ascertaining
you could not have been ascertaining
they could not have been ascertaining

Forme interrogative

Forme simple

could I ascertain?
could you ascertain?
could she ascertain?
could we ascertain?
could you ascertain?
could they ascertain?

Forme en V-ing

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

Perfect

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

Perfect en V-ing

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

Forme interro-négative

Forme simple

could I not ascertain?
could you not ascertain?
could she not ascertain?
could we not ascertain?
could you not ascertain?
could they not ascertain?

Forme en V-ing

could I not be ascertaining?
could you not be ascertaining?
could she not be ascertaining?
could we not be ascertaining?
could you not be ascertaining?
could they not be ascertaining?

Perfect

could I not have ascertained?
could you not have ascertained?
could she not have ascertained?
could we not have ascertained?
could you not have ascertained?
could they not have ascertained?

Perfect en V-ing

could I not have been ascertaining?
could you not have been ascertaining?
could she not have been ascertaining?
could we not have been ascertaining?
could you not have been ascertaining?
could they not have been ascertaining?

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