should dust
Verbo regular: dust - dusted- dusted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should dust
you should dust
he should dust
we should dust
you should dust
they should dust 	I should be dusting
you should be dusting
he should be dusting
we should be dusting
you should be dusting
they should be dusting	I should have dusted
you should have dusted
he should have dusted
we should have dusted
you should have dusted
they should have dusted	I should have been dusting
you should have been dusting
he should have been dusting
we should have been dusting
you should have been dusting
they should have been dusting	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not dust
you should not dust
he should not dust
we should not dust
you should not dust
they should not dust 	I should not be dusting
you should not be dusting
he should not be dusting
we should not be dusting
you should not be dusting
they should not be dusting	I should not have dusted
you should not have dusted
he should not have dusted
we should not have dusted
you should not have dusted
they should not have dusted	I should not have been dusting
you should not have been dusting
he should not have been dusting
we should not have been dusting
you should not have been dusting
they should not have been dusting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I dust?
should you dust?
should he dust?
should we dust?
should you dust?
should they dust? 	should I be dusting?
should you be dusting?
should he be dusting?
should we be dusting?
should you be dusting?
should they be dusting? 	should I have dusted?
should you have dusted?
should he have dusted?
should we have dusted?
should you have dusted?
should they have dusted? 	should I have been dusting?
should you have been dusting?
should he have been dusting?
should we have been dusting?
should you have been dusting?
should they have been dusting? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not dust?
should you not dust?
should he not dust?
should we not dust?
should you not dust?
should they not dust? 	should I not be dusting?
should you not be dusting?
should he not be dusting?
should we not be dusting?
should you not be dusting?
should they not be dusting? 	should I not have dusted?
should you not have dusted?
should he not have dusted?
should we not have dusted?
should you not have dusted?
should they not have dusted? 	should I not have been dusting?
should you not have been dusting?
should he not have been dusting?
should we not have been dusting?
should you not have been dusting?
should they not have been dusting?