Conjugação do verbo inglês
CAN BACKCROSS

Verbo regular: backcross - backcrossed - backcrossed

Afirmação

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

Negação

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

Forma interrogativa

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

Forma interro-Negação

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