should refrain
Verbo regular: refrain - refrained- refrained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should refrain
you should refrain
he should refrain
we should refrain
you should refrain
they should refrain 	I should be refraining
you should be refraining
he should be refraining
we should be refraining
you should be refraining
they should be refraining	I should have refrained
you should have refrained
he should have refrained
we should have refrained
you should have refrained
they should have refrained	I should have been refraining
you should have been refraining
he should have been refraining
we should have been refraining
you should have been refraining
they should have been refraining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not refrain
you should not refrain
he should not refrain
we should not refrain
you should not refrain
they should not refrain 	I should not be refraining
you should not be refraining
he should not be refraining
we should not be refraining
you should not be refraining
they should not be refraining	I should not have refrained
you should not have refrained
he should not have refrained
we should not have refrained
you should not have refrained
they should not have refrained	I should not have been refraining
you should not have been refraining
he should not have been refraining
we should not have been refraining
you should not have been refraining
they should not have been refraining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I refrain?
should you refrain?
should he refrain?
should we refrain?
should you refrain?
should they refrain? 	should I be refraining?
should you be refraining?
should he be refraining?
should we be refraining?
should you be refraining?
should they be refraining? 	should I have refrained?
should you have refrained?
should he have refrained?
should we have refrained?
should you have refrained?
should they have refrained? 	should I have been refraining?
should you have been refraining?
should he have been refraining?
should we have been refraining?
should you have been refraining?
should they have been refraining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not refrain?
should you not refrain?
should he not refrain?
should we not refrain?
should you not refrain?
should they not refrain? 	should I not be refraining?
should you not be refraining?
should he not be refraining?
should we not be refraining?
should you not be refraining?
should they not be refraining? 	should I not have refrained?
should you not have refrained?
should he not have refrained?
should we not have refrained?
should you not have refrained?
should they not have refrained? 	should I not have been refraining?
should you not have been refraining?
should he not have been refraining?
should we not have been refraining?
should you not have been refraining?
should they not have been refraining?