English verb conjugation
OUGHT TO SING

Irregular verb: sing - sang - sung

Affirmation

Simple form	V-ing form
I ought to sing you ought to sing he ought to sing we ought to sing you ought to sing they ought to sing	I ought to be singing you ought to be singing he ought to be singing we ought to be singing you ought to be singing they ought to be singing
Perfect	V-ing perfect
I ought to have sung you ought to have sung he ought to have sung we ought to have sung you ought to have sung they ought to have sung	I ought to have been singing you ought to have been singing he ought to have been singing we ought to have been singing you ought to have been singing they ought to have been singing

Negation

Simple form	V-ing form
I ought not to sing you ought not to sing he ought not to sing we ought not to sing you ought not to sing they ought not to sing	I ought not to singing you ought not to singing he ought not to singing we ought not to singing you ought not to singing they ought not to singing
Perfect	V-ing perfect
I ought not to have sung you ought not to have sung he ought not to have sung we ought not to have sung you ought not to have sung they ought not to have sung	I ought not to have been singing you ought not to have been singing he ought not to have been singing we ought not to have been singing you ought not to have been singing they ought not to have been singing

Interrogative form

Simple form	V-ing form
ought to I sing? ought to you sing? ought to he sing? ought to we sing? ought to you sing? ought to they sing?	ought to I be singing? ought to you be singing? ought to he be singing? ought to we be singing? ought to you be singing? ought to they be singing?
Perfect	V-ing perfect
ought to I have sung? ought to you have sung? ought to he have sung? ought to we have sung? ought to you have sung? ought to they have sung?	ought to I have been singing? ought to you have been singing? ought to he have been singing? ought to we have been singing? ought to you have been singing? ought to they have been singing?

Interro-negative form

Simple form	V-ing form
ought I not to sing? ought you not to sing? ought he not to sing? ought we not to sing? ought you not to sing? ought they not to sing?	ought I not to be singing? ought you not to be singing? ought he not to be singing? ought we not to be singing? ought you not to be singing? ought they not to be singing?
Perfect	V-ing perfect
ought I not to have sung? ought you not to have sung? ought he not to have sung? ought we not to have sung? ought you not to have sung? ought they not to have sung?	ought I not to have been singing? ought you not to have been singing? ought he not to have been singing? ought we not to have been singing? ought you not to have been singing? ought they not to have been singing?