Conjugación del verbo inglés
SHOULD SUM

Verbo regular: sum - summed - summed

Afirmación

Forma simple	Forma con V-ing
I should sum you should sum he should sum we should sum you should sum they should sum	I should be summing you should be summing he should be summing we should be summing you should be summing they should be summing
Perfecto	Perfecto con V-ing
I should have summed you should have summed he should have summed we should have summed you should have summed they should have summed	I should have been summing you should have been summing he should have been summing we should have been summing you should have been summing they should have been summing

Negación

Forma simple	Forma con V-ing
I should not sum you should not sum he should not sum we should not sum you should not sum they should not sum	I should not be summing you should not be summing he should not be summing we should not be summing you should not be summing they should not be summing
Perfecto	Perfecto con V-ing
I should not have summed you should not have summed he should not have summed we should not have summed you should not have summed they should not have summed	I should not have been summing you should not have been summing he should not have been summing we should not have been summing you should not have been summing they should not have been summing

Forma interrogativa

Forma simple	Forma con V-ing
should I sum? should you sum? should he sum? should we sum? should you sum? should they sum?	should I be summing? should you be summing? should he be summing? should we be summing? should you be summing? should they be summing?
Perfecto	Perfecto con V-ing
should I have summed? should you have summed? should he have summed? should we have summed? should you have summed? should they have summed?	should I have been summing? should you have been summing? should he have been summing? should we have been summing? should you have been summing? should they have been summing?

Forma interro-negativa

Forma simple	Forma con V-ing
should I not sum? should you not sum? should he not sum? should we not sum? should you not sum? should they not sum?	should I not be summing? should you not be summing? should he not be summing? should we not be summing? should you not be summing? should they not be summing?
Perfecto	Perfecto con V-ing
should I not have summed? should you not have summed? should he not have summed? should we not have summed? should you not have summed? should they not have summed?	should I not have been summing? should you not have been summing? should he not have been summing? should we not have been summing? should you not have been summing? should they not have been summing?