should tune
Verbo regular: tune - tuned- tuned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should tune
you should tune
she should tune
we should tune
you should tune
they should tune 	I should be tuning
you should be tuning
she should be tuning
we should be tuning
you should be tuning
they should be tuning	I should have tuned
you should have tuned
she should have tuned
we should have tuned
you should have tuned
they should have tuned	I should have been tuning
you should have been tuning
she should have been tuning
we should have been tuning
you should have been tuning
they should have been tuning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not tune
you should not tune
she should not tune
we should not tune
you should not tune
they should not tune 	I should not be tuning
you should not be tuning
she should not be tuning
we should not be tuning
you should not be tuning
they should not be tuning	I should not have tuned
you should not have tuned
she should not have tuned
we should not have tuned
you should not have tuned
they should not have tuned	I should not have been tuning
you should not have been tuning
she should not have been tuning
we should not have been tuning
you should not have been tuning
they should not have been tuning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I tune?
should you tune?
should she tune?
should we tune?
should you tune?
should they tune? 	should I be tuning?
should you be tuning?
should she be tuning?
should we be tuning?
should you be tuning?
should they be tuning? 	should I have tuned?
should you have tuned?
should she have tuned?
should we have tuned?
should you have tuned?
should they have tuned? 	should I have been tuning?
should you have been tuning?
should she have been tuning?
should we have been tuning?
should you have been tuning?
should they have been tuning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not tune?
should you not tune?
should she not tune?
should we not tune?
should you not tune?
should they not tune? 	should I not be tuning?
should you not be tuning?
should she not be tuning?
should we not be tuning?
should you not be tuning?
should they not be tuning? 	should I not have tuned?
should you not have tuned?
should she not have tuned?
should we not have tuned?
should you not have tuned?
should they not have tuned? 	should I not have been tuning?
should you not have been tuning?
should she not have been tuning?
should we not have been tuning?
should you not have been tuning?
should they not have been tuning?