Conjugación del verbo inglés
SHOULD CONCENTRATE

Verbo regular: concentrate - concentrated - concentrated

Afirmación

Forma simple	Forma con V-ing
I should concentrate you should concentrate she should concentrate we should concentrate you should concentrate they should concentrate	I should be concentrating you should be concentrating she should be concentrating we should be concentrating you should be concentrating they should be concentrating
Perfecto	Perfecto con V-ing
I should have concentrated you should have concentrated she should have concentrated we should have concentrated you should have concentrated they should have concentrated	I should have been concentrating you should have been concentrating she should have been concentrating we should have been concentrating you should have been concentrating they should have been concentrating

Negación

Forma simple	Forma con V-ing
I should not concentrate you should not concentrate she should not concentrate we should not concentrate you should not concentrate they should not concentrate	I should not be concentrating you should not be concentrating she should not be concentrating we should not be concentrating you should not be concentrating they should not be concentrating
Perfecto	Perfecto con V-ing
I should not have concentrated you should not have concentrated she should not have concentrated we should not have concentrated you should not have concentrated they should not have concentrated	I should not have been concentrating you should not have been concentrating she should not have been concentrating we should not have been concentrating you should not have been concentrating they should not have been concentrating

Forma interrogativa

Forma simple	Forma con V-ing
should I concentrate? should you concentrate? should she concentrate? should we concentrate? should you concentrate? should they concentrate?	should I be concentrating? should you be concentrating? should she be concentrating? should we be concentrating? should you be concentrating? should they be concentrating?
Perfecto	Perfecto con V-ing
should I have concentrated? should you have concentrated? should she have concentrated? should we have concentrated? should you have concentrated? should they have concentrated?	should I have been concentrating? should you have been concentrating? should she have been concentrating? should we have been concentrating? should you have been concentrating? should they have been concentrating?

Forma interro-negativa

Forma simple	Forma con V-ing
should I not concentrate? should you not concentrate? should she not concentrate? should we not concentrate? should you not concentrate? should they not concentrate?	should I not be concentrating? should you not be concentrating? should she not be concentrating? should we not be concentrating? should you not be concentrating? should they not be concentrating?
Perfecto	Perfecto con V-ing
should I not have concentrated? should you not have concentrated? should she not have concentrated? should we not have concentrated? should you not have concentrated? should they not have concentrated?	should I not have been concentrating? should you not have been concentrating? should she not have been concentrating? should we not have been concentrating? should you not have been concentrating? should they not have been concentrating?