Conjugação do verbo inglês MUST SNOW

Verbo regular: snow - snowed - snowed

Afirmação

Forma simple

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it must snow
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Forma com V-ing

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it must be snowing
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Perfeito

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it must have snowed
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Perfeito com V-ing

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it must have been snowing
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Forma simple

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it mustn't snow
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Forma com V-ing

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it mustn't be snowing
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Perfeito

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it mustn't have snowed
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Perfeito com V-ing

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it mustn't have been snowing
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Forma simple

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must it snow?
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Forma com V-ing

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must it be snowing?
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Perfeito

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must it have snowed?
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Perfeito com V-ing

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must it have been snowing?
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Forma simple

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mustn't it snow?
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Forma com V-ing

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mustn't it be snowing?
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Perfeito

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mustn't it have snowed?
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Perfeito com V-ing

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mustn't it have been snowing?
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