English verb conjugation SHOULD SNOW
Regular verb: snow - snowed - snowed
Affirmation
Simple form
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it should snow
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V-ing form
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it should be snowing
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Perfect
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it should have snowed
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V-ing perfect
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it should have been snowing
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Negation
Simple form
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it should not snow
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V-ing form
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it should not be snowing
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Perfect
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it should not have snowed
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V-ing perfect
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it should not have been snowing
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Interrogative form
Simple form
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should it snow?
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V-ing form
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should it be snowing?
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Perfect
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should it have snowed?
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V-ing perfect
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should it have been snowing?
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Interro-negative form
Simple form
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should it not snow?
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V-ing form
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should it not be snowing?
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Perfect
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should it not have snowed?
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V-ing perfect
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should it not have been snowing?
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