English verb conjugation SHOULD THUNDER

Regular verb: thunder - thundered - thundered

Affirmation

Simple form

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it should thunder
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V-ing form

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it should be thundering
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Perfect

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it should have thundered
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V-ing perfect

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it should have been thundering
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Simple form

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it should not thunder
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V-ing form

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it should not be thundering
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Perfect

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it should not have thundered
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V-ing perfect

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it should not have been thundering
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Simple form

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should it thunder?
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V-ing form

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should it be thundering?
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Perfect

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should it have thundered?
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V-ing perfect

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should it have been thundering?
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Simple form

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should it not thunder?
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V-ing form

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should it not be thundering?
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Perfect

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should it not have thundered?
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V-ing perfect

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should it not have been thundering?
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