ought to snow
Verbo regular: snow - snowed- snowed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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it ought to snow
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it ought to be snowing
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it ought to have snowed
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it ought to have been snowing
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Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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it ought not to snow
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it ought not to snowing
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it ought not to have snowed
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it ought not to have been snowing
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Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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ought to it snow?
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ought to it be snowing?
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ought to it have snowed?
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ought to it have been snowing?
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Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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ought it not to snow?
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ought it not to be snowing?
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ought it not to have snowed?
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ought it not to have been snowing?
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