English verb conjugation
OUGHT TO UNDERSTUDY

Regular verb: understudy - understudied - understudied

Affirmation

Simple form	V-ing form
I ought to understudy you ought to understudy he ought to understudy we ought to understudy you ought to understudy they ought to understudy	I ought to be understudying you ought to be understudying he ought to be understudying we ought to be understudying you ought to be understudying they ought to be understudying
Perfect	V-ing perfect
I ought to have understudied you ought to have understudied he ought to have understudied we ought to have understudied you ought to have understudied they ought to have understudied	I ought to have been understudying you ought to have been understudying he ought to have been understudying we ought to have been understudying you ought to have been understudying they ought to have been understudying

Negation

Simple form	V-ing form
I ought not to understudy you ought not to understudy he ought not to understudy we ought not to understudy you ought not to understudy they ought not to understudy	I ought not to understudying you ought not to understudying he ought not to understudying we ought not to understudying you ought not to understudying they ought not to understudying
Perfect	V-ing perfect
I ought not to have understudied you ought not to have understudied he ought not to have understudied we ought not to have understudied you ought not to have understudied they ought not to have understudied	I ought not to have been understudying you ought not to have been understudying he ought not to have been understudying we ought not to have been understudying you ought not to have been understudying they ought not to have been understudying

Interrogative form

Simple form	V-ing form
ought to I understudy? ought to you understudy? ought to he understudy? ought to we understudy? ought to you understudy? ought to they understudy?	ought to I be understudying? ought to you be understudying? ought to he be understudying? ought to we be understudying? ought to you be understudying? ought to they be understudying?
Perfect	V-ing perfect
ought to I have understudied? ought to you have understudied? ought to he have understudied? ought to we have understudied? ought to you have understudied? ought to they have understudied?	ought to I have been understudying? ought to you have been understudying? ought to he have been understudying? ought to we have been understudying? ought to you have been understudying? ought to they have been understudying?

Interro-negative form

Simple form	V-ing form
ought I not to understudy? ought you not to understudy? ought he not to understudy? ought we not to understudy? ought you not to understudy? ought they not to understudy?	ought I not to be understudying? ought you not to be understudying? ought he not to be understudying? ought we not to be understudying? ought you not to be understudying? ought they not to be understudying?
Perfect	V-ing perfect
ought I not to have understudied? ought you not to have understudied? ought he not to have understudied? ought we not to have understudied? ought you not to have understudied? ought they not to have understudied?	ought I not to have been understudying? ought you not to have been understudying? ought he not to have been understudying? ought we not to have been understudying? ought you not to have been understudying? ought they not to have been understudying?