Conjugaison du verbe anglais MUST SNOW
Verbe régulier : snow -  snowed - snowed
Traduction française : neiger - (US)  baratiner 
Affirmation
Forme simple
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it must snow
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Forme en V-ing
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it must be snowing
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Perfect
--
it must have snowed
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Perfect en V-ing
--
it must have been snowing
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Négation
Forme simple
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it mustn't snow
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Forme en V-ing
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it mustn't be snowing
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Perfect
--
it mustn't have snowed
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Perfect en V-ing
--
it mustn't have been snowing
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Forme interrogative
Forme simple
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must it snow?
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Forme en V-ing
--
must it be snowing?
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Perfect
--
must it have snowed?
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Perfect en V-ing
--
must it have been snowing?
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Forme interro-négative
Forme simple
--
mustn't it snow?
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Forme en V-ing
--
mustn't it be snowing?
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Perfect
--
mustn't it have snowed?
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Perfect en V-ing
--
mustn't it have been snowing?
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