Conjugação do verbo inglês
SHOULD BACK

Verbo regular: back - backed - backed

Afirmação

Forma simple	Forma com V-ing
I should back you should back she should back we should back you should back they should back	I should be backing you should be backing she should be backing we should be backing you should be backing they should be backing
Perfeito	Perfeito com V-ing
I should have backed you should have backed she should have backed we should have backed you should have backed they should have backed	I should have been backing you should have been backing she should have been backing we should have been backing you should have been backing they should have been backing

Negação

Forma simple	Forma com V-ing
I should not back you should not back she should not back we should not back you should not back they should not back	I should not be backing you should not be backing she should not be backing we should not be backing you should not be backing they should not be backing
Perfeito	Perfeito com V-ing
I should not have backed you should not have backed she should not have backed we should not have backed you should not have backed they should not have backed	I should not have been backing you should not have been backing she should not have been backing we should not have been backing you should not have been backing they should not have been backing

Forma interrogativa

Forma simple	Forma com V-ing
should I back? should you back? should she back? should we back? should you back? should they back?	should I be backing? should you be backing? should she be backing? should we be backing? should you be backing? should they be backing?
Perfeito	Perfeito com V-ing
should I have backed? should you have backed? should she have backed? should we have backed? should you have backed? should they have backed?	should I have been backing? should you have been backing? should she have been backing? should we have been backing? should you have been backing? should they have been backing?

Forma interro-Negação

Forma simple	Forma com V-ing
should I not back? should you not back? should she not back? should we not back? should you not back? should they not back?	should I not be backing? should you not be backing? should she not be backing? should we not be backing? should you not be backing? should they not be backing?
Perfeito	Perfeito com V-ing
should I not have backed? should you not have backed? should she not have backed? should we not have backed? should you not have backed? should they not have backed?	should I not have been backing? should you not have been backing? should she not have been backing? should we not have been backing? should you not have been backing? should they not have been backing?