should frown
Verbo regular: frown - frowned- frowned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should frown
you should frown
she should frown
we should frown
you should frown
they should frown 	I should be frowning
you should be frowning
she should be frowning
we should be frowning
you should be frowning
they should be frowning	I should have frowned
you should have frowned
she should have frowned
we should have frowned
you should have frowned
they should have frowned	I should have been frowning
you should have been frowning
she should have been frowning
we should have been frowning
you should have been frowning
they should have been frowning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not frown
you should not frown
she should not frown
we should not frown
you should not frown
they should not frown 	I should not be frowning
you should not be frowning
she should not be frowning
we should not be frowning
you should not be frowning
they should not be frowning	I should not have frowned
you should not have frowned
she should not have frowned
we should not have frowned
you should not have frowned
they should not have frowned	I should not have been frowning
you should not have been frowning
she should not have been frowning
we should not have been frowning
you should not have been frowning
they should not have been frowning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I frown?
should you frown?
should she frown?
should we frown?
should you frown?
should they frown? 	should I be frowning?
should you be frowning?
should she be frowning?
should we be frowning?
should you be frowning?
should they be frowning? 	should I have frowned?
should you have frowned?
should she have frowned?
should we have frowned?
should you have frowned?
should they have frowned? 	should I have been frowning?
should you have been frowning?
should she have been frowning?
should we have been frowning?
should you have been frowning?
should they have been frowning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not frown?
should you not frown?
should she not frown?
should we not frown?
should you not frown?
should they not frown? 	should I not be frowning?
should you not be frowning?
should she not be frowning?
should we not be frowning?
should you not be frowning?
should they not be frowning? 	should I not have frowned?
should you not have frowned?
should she not have frowned?
should we not have frowned?
should you not have frowned?
should they not have frowned? 	should I not have been frowning?
should you not have been frowning?
should she not have been frowning?
should we not have been frowning?
should you not have been frowning?
should they not have been frowning?