should smooth
Verbo regular: smooth - smoothed- smoothed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should smooth
you should smooth
he should smooth
we should smooth
you should smooth
they should smooth 	I should be smoothing
you should be smoothing
he should be smoothing
we should be smoothing
you should be smoothing
they should be smoothing	I should have smoothed
you should have smoothed
he should have smoothed
we should have smoothed
you should have smoothed
they should have smoothed	I should have been smoothing
you should have been smoothing
he should have been smoothing
we should have been smoothing
you should have been smoothing
they should have been smoothing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not smooth
you should not smooth
he should not smooth
we should not smooth
you should not smooth
they should not smooth 	I should not be smoothing
you should not be smoothing
he should not be smoothing
we should not be smoothing
you should not be smoothing
they should not be smoothing	I should not have smoothed
you should not have smoothed
he should not have smoothed
we should not have smoothed
you should not have smoothed
they should not have smoothed	I should not have been smoothing
you should not have been smoothing
he should not have been smoothing
we should not have been smoothing
you should not have been smoothing
they should not have been smoothing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I smooth?
should you smooth?
should he smooth?
should we smooth?
should you smooth?
should they smooth? 	should I be smoothing?
should you be smoothing?
should he be smoothing?
should we be smoothing?
should you be smoothing?
should they be smoothing? 	should I have smoothed?
should you have smoothed?
should he have smoothed?
should we have smoothed?
should you have smoothed?
should they have smoothed? 	should I have been smoothing?
should you have been smoothing?
should he have been smoothing?
should we have been smoothing?
should you have been smoothing?
should they have been smoothing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not smooth?
should you not smooth?
should he not smooth?
should we not smooth?
should you not smooth?
should they not smooth? 	should I not be smoothing?
should you not be smoothing?
should he not be smoothing?
should we not be smoothing?
should you not be smoothing?
should they not be smoothing? 	should I not have smoothed?
should you not have smoothed?
should he not have smoothed?
should we not have smoothed?
should you not have smoothed?
should they not have smoothed? 	should I not have been smoothing?
should you not have been smoothing?
should he not have been smoothing?
should we not have been smoothing?
should you not have been smoothing?
should they not have been smoothing?