should pretreat
Verbo regular: pretreat - pretreated- pretreated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should pretreat
you should pretreat
he should pretreat
we should pretreat
you should pretreat
they should pretreat 	I should be pretreating
you should be pretreating
he should be pretreating
we should be pretreating
you should be pretreating
they should be pretreating	I should have pretreated
you should have pretreated
he should have pretreated
we should have pretreated
you should have pretreated
they should have pretreated	I should have been pretreating
you should have been pretreating
he should have been pretreating
we should have been pretreating
you should have been pretreating
they should have been pretreating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not pretreat
you should not pretreat
he should not pretreat
we should not pretreat
you should not pretreat
they should not pretreat 	I should not be pretreating
you should not be pretreating
he should not be pretreating
we should not be pretreating
you should not be pretreating
they should not be pretreating	I should not have pretreated
you should not have pretreated
he should not have pretreated
we should not have pretreated
you should not have pretreated
they should not have pretreated	I should not have been pretreating
you should not have been pretreating
he should not have been pretreating
we should not have been pretreating
you should not have been pretreating
they should not have been pretreating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I pretreat?
should you pretreat?
should he pretreat?
should we pretreat?
should you pretreat?
should they pretreat? 	should I be pretreating?
should you be pretreating?
should he be pretreating?
should we be pretreating?
should you be pretreating?
should they be pretreating? 	should I have pretreated?
should you have pretreated?
should he have pretreated?
should we have pretreated?
should you have pretreated?
should they have pretreated? 	should I have been pretreating?
should you have been pretreating?
should he have been pretreating?
should we have been pretreating?
should you have been pretreating?
should they have been pretreating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not pretreat?
should you not pretreat?
should he not pretreat?
should we not pretreat?
should you not pretreat?
should they not pretreat? 	should I not be pretreating?
should you not be pretreating?
should he not be pretreating?
should we not be pretreating?
should you not be pretreating?
should they not be pretreating? 	should I not have pretreated?
should you not have pretreated?
should he not have pretreated?
should we not have pretreated?
should you not have pretreated?
should they not have pretreated? 	should I not have been pretreating?
should you not have been pretreating?
should he not have been pretreating?
should we not have been pretreating?
should you not have been pretreating?
should they not have been pretreating?