Conjugación del verbo inglés
SHOULD THUNDER

Verbo regular: thunder - thundered - thundered

Afirmación

Forma simple	Forma con V-ing
- - it should thunder - - -	- - it should be thundering - - -
Perfecto	Perfecto con V-ing
- - it should have thundered - - -	- - it should have been thundering - - -

Negación

Forma simple	Forma con V-ing
- - it should not thunder - - -	- - it should not be thundering - - -
Perfecto	Perfecto con V-ing
- - it should not have thundered - - -	- - it should not have been thundering - - -

Forma interrogativa

Forma simple	Forma con V-ing
- - should it thunder? - - -	- - should it be thundering? - - -
Perfecto	Perfecto con V-ing
- - should it have thundered? - - -	- - should it have been thundering? - - -

Forma interro-negativa

Forma simple	Forma con V-ing
- - should it not thunder? - - -	- - should it not be thundering? - - -
Perfecto	Perfecto con V-ing
- - should it not have thundered? - - -	- - should it not have been thundering? - - -