Conjugação do verbo inglês
SHOULD BACKCROSS

Verbo regular: backcross - backcrossed - backcrossed

Afirmação

Forma simple	Forma com V-ing
I should backcross you should backcross he should backcross we should backcross you should backcross they should backcross	I should be backcrossing you should be backcrossing he should be backcrossing we should be backcrossing you should be backcrossing they should be backcrossing
Perfeito	Perfeito com V-ing
I should have backcrossed you should have backcrossed he should have backcrossed we should have backcrossed you should have backcrossed they should have backcrossed	I should have been backcrossing you should have been backcrossing he should have been backcrossing we should have been backcrossing you should have been backcrossing they should have been backcrossing

Negação

Forma simple	Forma com V-ing
I should not backcross you should not backcross he should not backcross we should not backcross you should not backcross they should not backcross	I should not be backcrossing you should not be backcrossing he should not be backcrossing we should not be backcrossing you should not be backcrossing they should not be backcrossing
Perfeito	Perfeito com V-ing
I should not have backcrossed you should not have backcrossed he should not have backcrossed we should not have backcrossed you should not have backcrossed they should not have backcrossed	I should not have been backcrossing you should not have been backcrossing he should not have been backcrossing we should not have been backcrossing you should not have been backcrossing they should not have been backcrossing

Forma interrogativa

Forma simple	Forma com V-ing
should I backcross? should you backcross? should he backcross? should we backcross? should you backcross? should they backcross?	should I be backcrossing? should you be backcrossing? should he be backcrossing? should we be backcrossing? should you be backcrossing? should they be backcrossing?
Perfeito	Perfeito com V-ing
should I have backcrossed? should you have backcrossed? should he have backcrossed? should we have backcrossed? should you have backcrossed? should they have backcrossed?	should I have been backcrossing? should you have been backcrossing? should he have been backcrossing? should we have been backcrossing? should you have been backcrossing? should they have been backcrossing?

Forma interro-Negação

Forma simple	Forma com V-ing
should I not backcross? should you not backcross? should he not backcross? should we not backcross? should you not backcross? should they not backcross?	should I not be backcrossing? should you not be backcrossing? should he not be backcrossing? should we not be backcrossing? should you not be backcrossing? should they not be backcrossing?
Perfeito	Perfeito com V-ing
should I not have backcrossed? should you not have backcrossed? should he not have backcrossed? should we not have backcrossed? should you not have backcrossed? should they not have backcrossed?	should I not have been backcrossing? should you not have been backcrossing? should he not have been backcrossing? should we not have been backcrossing? should you not have been backcrossing? should they not have been backcrossing?