English verb conjugation
OUGHT TO IMPAIR

Regular verb: impair - impaired - impaired

Affirmation

Simple form	V-ing form
I ought to impair you ought to impair he ought to impair we ought to impair you ought to impair they ought to impair	I ought to be impairing you ought to be impairing he ought to be impairing we ought to be impairing you ought to be impairing they ought to be impairing
Perfect	V-ing perfect
I ought to have impaired you ought to have impaired he ought to have impaired we ought to have impaired you ought to have impaired they ought to have impaired	I ought to have been impairing you ought to have been impairing he ought to have been impairing we ought to have been impairing you ought to have been impairing they ought to have been impairing

Negation

Simple form	V-ing form
I ought not to impair you ought not to impair he ought not to impair we ought not to impair you ought not to impair they ought not to impair	I ought not to impairing you ought not to impairing he ought not to impairing we ought not to impairing you ought not to impairing they ought not to impairing
Perfect	V-ing perfect
I ought not to have impaired you ought not to have impaired he ought not to have impaired we ought not to have impaired you ought not to have impaired they ought not to have impaired	I ought not to have been impairing you ought not to have been impairing he ought not to have been impairing we ought not to have been impairing you ought not to have been impairing they ought not to have been impairing

Interrogative form

Simple form	V-ing form
ought to I impair? ought to you impair? ought to he impair? ought to we impair? ought to you impair? ought to they impair?	ought to I be impairing? ought to you be impairing? ought to he be impairing? ought to we be impairing? ought to you be impairing? ought to they be impairing?
Perfect	V-ing perfect
ought to I have impaired? ought to you have impaired? ought to he have impaired? ought to we have impaired? ought to you have impaired? ought to they have impaired?	ought to I have been impairing? ought to you have been impairing? ought to he have been impairing? ought to we have been impairing? ought to you have been impairing? ought to they have been impairing?

Interro-negative form

Simple form	V-ing form
ought I not to impair? ought you not to impair? ought he not to impair? ought we not to impair? ought you not to impair? ought they not to impair?	ought I not to be impairing? ought you not to be impairing? ought he not to be impairing? ought we not to be impairing? ought you not to be impairing? ought they not to be impairing?
Perfect	V-ing perfect
ought I not to have impaired? ought you not to have impaired? ought he not to have impaired? ought we not to have impaired? ought you not to have impaired? ought they not to have impaired?	ought I not to have been impairing? ought you not to have been impairing? ought he not to have been impairing? ought we not to have been impairing? ought you not to have been impairing? ought they not to have been impairing?