Conjugaison du verbe anglais COULD HAPPEN
Verbe régulier : happen - happened - happened
Traduction française : arriver - se passer
Affirmation
Forme simple
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it could happen
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Forme en V-ing
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it could be happening
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Perfect
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it could have happened
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Perfect en V-ing
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it could have been happening
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Négation
Forme simple
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it couldn't happen
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Forme en V-ing
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it couldn't be happening
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Perfect
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it couldn't have happened
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Perfect en V-ing
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it couldn't have been happening
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Forme interrogative
Forme simple
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could it happen?
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Forme en V-ing
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could it be happening?
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Perfect
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could it have happened?
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Perfect en V-ing
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could it have been happening?
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Forme interro-négative
Forme simple
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couldn't it happen?
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Forme en V-ing
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couldn't it be happening?
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Perfect
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couldn't it have happened?
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Perfect en V-ing
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couldn't it have been happening?
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Verbe au hasard
act - adore - alter - author - become - chirp - clear - dance - descend - disgust - drive - earn - fold - graduate - grope - import - insert - invest - japan - miss - obtain - pass - pedal - peddle - planish - prevent - promote - save - separate - serve - sightsee - sit - sort - spy - to be - to do - to go - to have - ump - vary - visit - warn - wax - widen