The Conjugator
Conjugaison du verbe anglais
COULD HAPPEN

Verbe régulier : happen - happened - happened
Traduction française : arriver - se passer

Affirmation

Forme simple

Forme en V-ing

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it could happen
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it could be happening
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Perfect

Perfect en V-ing

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it could have happened
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it could have been happening
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Négation

Forme simple

Forme en V-ing

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it could not happen
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it could not be happening
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Perfect

Perfect en V-ing

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it could not have happened
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it could not have been happening
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Forme interrogative

Forme simple

Forme en V-ing

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could it happen?
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could it be happening?
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Perfect

Perfect en V-ing

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could it have happened?
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could it have been happening?
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Forme interro-négative

Forme simple

Forme en V-ing

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could it not happen?
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could it not be happening?
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Perfect

Perfect en V-ing

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could it not have happened?
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could it not have been happening?
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