should singe
Verbo regular: singe - singed- singed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should singe
you should singe
she should singe
we should singe
you should singe
they should singe 	I should be singing
you should be singing
she should be singing
we should be singing
you should be singing
they should be singing	I should have singed
you should have singed
she should have singed
we should have singed
you should have singed
they should have singed	I should have been singing
you should have been singing
she should have been singing
we should have been singing
you should have been singing
they should have been singing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not singe
you should not singe
she should not singe
we should not singe
you should not singe
they should not singe 	I should not be singing
you should not be singing
she should not be singing
we should not be singing
you should not be singing
they should not be singing	I should not have singed
you should not have singed
she should not have singed
we should not have singed
you should not have singed
they should not have singed	I should not have been singing
you should not have been singing
she should not have been singing
we should not have been singing
you should not have been singing
they should not have been singing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I singe?
should you singe?
should she singe?
should we singe?
should you singe?
should they singe? 	should I be singing?
should you be singing?
should she be singing?
should we be singing?
should you be singing?
should they be singing? 	should I have singed?
should you have singed?
should she have singed?
should we have singed?
should you have singed?
should they have singed? 	should I have been singing?
should you have been singing?
should she have been singing?
should we have been singing?
should you have been singing?
should they have been singing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not singe?
should you not singe?
should she not singe?
should we not singe?
should you not singe?
should they not singe? 	should I not be singing?
should you not be singing?
should she not be singing?
should we not be singing?
should you not be singing?
should they not be singing? 	should I not have singed?
should you not have singed?
should she not have singed?
should we not have singed?
should you not have singed?
should they not have singed? 	should I not have been singing?
should you not have been singing?
should she not have been singing?
should we not have been singing?
should you not have been singing?
should they not have been singing?