ought to pretreat
Verbe régulier : pretreat - pretreated- pretreated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought to pretreat
you ought to pretreat
he 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
he 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
he 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
he ought to have been pretreating
we ought to have been pretreating
you ought to have been pretreating
they ought to have been pretreating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I oughtn't to pretreat
you oughtn't to pretreat
he 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
he 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
he 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
he 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	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought to I pretreat?
ought to you pretreat?
ought to he 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 he 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 he 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 he have been pretreating?
ought to we have been pretreating?
ought to you have been pretreating?
ought to they have been pretreating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
oughtn't I to pretreat?
oughtn't you to pretreat?
oughtn't he 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 he 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 he 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 he 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?