should practice
Verbo regular: practice - practiced- practiced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should practice
you should practice
she should practice
we should practice
you should practice
they should practice 	I should be practicing
you should be practicing
she should be practicing
we should be practicing
you should be practicing
they should be practicing	I should have practiced
you should have practiced
she should have practiced
we should have practiced
you should have practiced
they should have practiced	I should have been practicing
you should have been practicing
she should have been practicing
we should have been practicing
you should have been practicing
they should have been practicing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not practice
you should not practice
she should not practice
we should not practice
you should not practice
they should not practice 	I should not be practicing
you should not be practicing
she should not be practicing
we should not be practicing
you should not be practicing
they should not be practicing	I should not have practiced
you should not have practiced
she should not have practiced
we should not have practiced
you should not have practiced
they should not have practiced	I should not have been practicing
you should not have been practicing
she should not have been practicing
we should not have been practicing
you should not have been practicing
they should not have been practicing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I practice?
should you practice?
should she practice?
should we practice?
should you practice?
should they practice? 	should I be practicing?
should you be practicing?
should she be practicing?
should we be practicing?
should you be practicing?
should they be practicing? 	should I have practiced?
should you have practiced?
should she have practiced?
should we have practiced?
should you have practiced?
should they have practiced? 	should I have been practicing?
should you have been practicing?
should she have been practicing?
should we have been practicing?
should you have been practicing?
should they have been practicing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not practice?
should you not practice?
should she not practice?
should we not practice?
should you not practice?
should they not practice? 	should I not be practicing?
should you not be practicing?
should she not be practicing?
should we not be practicing?
should you not be practicing?
should they not be practicing? 	should I not have practiced?
should you not have practiced?
should she not have practiced?
should we not have practiced?
should you not have practiced?
should they not have practiced? 	should I not have been practicing?
should you not have been practicing?
should she not have been practicing?
should we not have been practicing?
should you not have been practicing?
should they not have been practicing?