English verb conjugation OUGHT TO THUNDER
Regular verb: thunder - thundered - thundered
Affirmation
Simple form
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it ought to thunder
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V-ing form
--
it ought to be thundering
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Perfect
--
it ought to have thundered
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V-ing perfect
--
it ought to have been thundering
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Negation
Simple form
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it oughtn't to thunder
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V-ing form
--
it oughtn't to be thundering
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Perfect
--
it oughtn't to have thundered
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V-ing perfect
--
it oughtn't to have been thundering
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Interrogative form
Simple form
--
ought to it thunder?
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V-ing form
--
ought to it be thundering?
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Perfect
--
ought to it have thundered?
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V-ing perfect
--
ought to it have been thundering?
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Interro-negative form
Simple form
--
oughtn't it to thunder?
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V-ing form
--
oughtn't it to be thundering?
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Perfect
--
oughtn't it to have thundered?
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V-ing perfect
--
oughtn't it to have been thundering?
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