The Conjugator
English verb conjugation
MUST THUNDER

Regular verb: thunder - thundered - thundered

Affirmation

Simple form

V-ing form

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-
it must thunder
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-
-		-
-
it must be thundering
-
-
-

Perfect

V-ing perfect

-
-
it must have thundered
-
-
-		-
-
it must have been thundering
-
-
-

Negation

Simple form

V-ing form

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-
it mustn't thunder
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-
-		-
-
it mustn't be thundering
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-
-

Perfect

V-ing perfect

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-
it mustn't have thundered
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-
-		-
-
it mustn't have been thundering
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-
-

Interrogative form

Simple form

V-ing form

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-
must it thunder?
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-
-		-
-
must it be thundering?
-
-
-

Perfect

V-ing perfect

-
-
must it have thundered?
-
-
-		-
-
must it have been thundering?
-
-
-

Interro-negative form

Simple form

V-ing form

-
-
mustn't it thunder?
-
-
-		-
-
mustn't it be thundering?
-
-
-

Perfect

V-ing perfect

-
-
mustn't it have thundered?
-
-
-		-
-
mustn't it have been thundering?
-
-
-