English verb conjugation
OUGHT TO KNOCK

Regular verb: knock - knocked - knocked

Affirmation

Simple form	V-ing form
I ought to knock you ought to knock he ought to knock we ought to knock you ought to knock they ought to knock	I ought to be knocking you ought to be knocking he ought to be knocking we ought to be knocking you ought to be knocking they ought to be knocking
Perfect	V-ing perfect
I ought to have knocked you ought to have knocked he ought to have knocked we ought to have knocked you ought to have knocked they ought to have knocked	I ought to have been knocking you ought to have been knocking he ought to have been knocking we ought to have been knocking you ought to have been knocking they ought to have been knocking

Negation

Simple form	V-ing form
I ought not to knock you ought not to knock he ought not to knock we ought not to knock you ought not to knock they ought not to knock	I ought not to knocking you ought not to knocking he ought not to knocking we ought not to knocking you ought not to knocking they ought not to knocking
Perfect	V-ing perfect
I ought not to have knocked you ought not to have knocked he ought not to have knocked we ought not to have knocked you ought not to have knocked they ought not to have knocked	I ought not to have been knocking you ought not to have been knocking he ought not to have been knocking we ought not to have been knocking you ought not to have been knocking they ought not to have been knocking

Interrogative form

Simple form	V-ing form
ought to I knock? ought to you knock? ought to he knock? ought to we knock? ought to you knock? ought to they knock?	ought to I be knocking? ought to you be knocking? ought to he be knocking? ought to we be knocking? ought to you be knocking? ought to they be knocking?
Perfect	V-ing perfect
ought to I have knocked? ought to you have knocked? ought to he have knocked? ought to we have knocked? ought to you have knocked? ought to they have knocked?	ought to I have been knocking? ought to you have been knocking? ought to he have been knocking? ought to we have been knocking? ought to you have been knocking? ought to they have been knocking?

Interro-negative form

Simple form	V-ing form
ought I not to knock? ought you not to knock? ought he not to knock? ought we not to knock? ought you not to knock? ought they not to knock?	ought I not to be knocking? ought you not to be knocking? ought he not to be knocking? ought we not to be knocking? ought you not to be knocking? ought they not to be knocking?
Perfect	V-ing perfect
ought I not to have knocked? ought you not to have knocked? ought he not to have knocked? ought we not to have knocked? ought you not to have knocked? ought they not to have knocked?	ought I not to have been knocking? ought you not to have been knocking? ought he not to have been knocking? ought we not to have been knocking? ought you not to have been knocking? ought they not to have been knocking?