ought to thunder
Verbo regular: thunder - thundered- thundered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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it ought to thunder
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-
- 	-
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it ought to be thundering
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-
- 	-
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it ought to have thundered
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-
- 	-
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it ought to have been thundering
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-
- 	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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it oughtn't to thunder
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-
- 	-
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it oughtn't to be thundering
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-
- 	-
-
it oughtn't to have thundered
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-
- 	-
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it oughtn't to have been thundering
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-
- 	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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ought to it thunder?
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-
- 	-
-
ought to it be thundering?
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-
- 	-
-
ought to it have thundered?
-
-
- 	-
-
ought to it have been thundering?
-
-
- 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
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oughtn't it to thunder?
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-
- 	-
-
oughtn't it to be thundering?
-
-
- 	-
-
oughtn't it to have thundered?
-
-
- 	-
-
oughtn't it to have been thundering?
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-
-