ought to pretreat
Verbo regular: pretreat - pretreated- pretreated

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I ought to pretreat
you ought to pretreat
she ought to pretreat
we ought to pretreat
you ought to pretreat
they ought to pretreat 	I ought to be pretreating
you ought to be pretreating
she ought to be pretreating
we ought to be pretreating
you ought to be pretreating
they ought to be pretreating	I ought to have pretreated
you ought to have pretreated
she ought to have pretreated
we ought to have pretreated
you ought to have pretreated
they ought to have pretreated	I ought to have been pretreating
you ought to have been pretreating
she ought to have been pretreating
we ought to have been pretreating
you ought to have been pretreating
they ought to have been pretreating	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I oughtn't to pretreat
you oughtn't to pretreat
she oughtn't to pretreat
we oughtn't to pretreat
you oughtn't to pretreat
they oughtn't to pretreat 	I oughtn't to be pretreating
you oughtn't to be pretreating
she oughtn't to be pretreating
we oughtn't to be pretreating
you oughtn't to be pretreating
they oughtn't to be pretreating	I oughtn't to have pretreated
you oughtn't to have pretreated
she oughtn't to have pretreated
we oughtn't to have pretreated
you oughtn't to have pretreated
they oughtn't to have pretreated	I oughtn't to have been pretreating
you oughtn't to have been pretreating
she oughtn't to have been pretreating
we oughtn't to have been pretreating
you oughtn't to have been pretreating
they oughtn't to have been pretreating	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
ought to I pretreat?
ought to you pretreat?
ought to she pretreat?
ought to we pretreat?
ought to you pretreat?
ought to they pretreat? 	ought to I be pretreating?
ought to you be pretreating?
ought to she be pretreating?
ought to we be pretreating?
ought to you be pretreating?
ought to they be pretreating? 	ought to I have pretreated?
ought to you have pretreated?
ought to she have pretreated?
ought to we have pretreated?
ought to you have pretreated?
ought to they have pretreated? 	ought to I have been pretreating?
ought to you have been pretreating?
ought to she have been pretreating?
ought to we have been pretreating?
ought to you have been pretreating?
ought to they have been pretreating? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
oughtn't I to pretreat?
oughtn't you to pretreat?
oughtn't she to pretreat?
oughtn't we to pretreat?
oughtn't you to pretreat?
oughtn't they to pretreat? 	oughtn't I to be pretreating?
oughtn't you to be pretreating?
oughtn't she to be pretreating?
oughtn't we to be pretreating?
oughtn't you to be pretreating?
oughtn't they to be pretreating? 	oughtn't I to have pretreated?
oughtn't you to have pretreated?
oughtn't she to have pretreated?
oughtn't we to have pretreated?
oughtn't you to have pretreated?
oughtn't they to have pretreated? 	oughtn't I to have been pretreating?
oughtn't you to have been pretreating?
oughtn't she to have been pretreating?
oughtn't we to have been pretreating?
oughtn't you to have been pretreating?
oughtn't they to have been pretreating?