English verb conjugation MAY THUNDER

Regular verb: thunder - thundered - thundered

Affirmation

Simple form

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it may thunder
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V-ing form

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it may be thundering
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Perfect

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it may have thundered
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V-ing perfect

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it may have been thundering
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Simple form

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it may not thunder
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V-ing form

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it may not be thundering
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Perfect

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it may not have thundered
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V-ing perfect

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it may not have been thundering
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Simple form

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may it thunder?
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V-ing form

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may it be thundering?
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Perfect

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may it have thundered?
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V-ing perfect

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may it have been thundering?
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Simple form

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may it not thunder?
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V-ing form

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may it not be thundering?
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Perfect

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may it not have thundered?
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V-ing perfect

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may it not have been thundering?
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