English verb conjugation
OUGHT TO SCREEN

Regular verb: screen - screened - screened

Affirmation

Simple form	V-ing form
I ought to screen you ought to screen he ought to screen we ought to screen you ought to screen they ought to screen	I ought to be screening you ought to be screening he ought to be screening we ought to be screening you ought to be screening they ought to be screening
Perfect	V-ing perfect
I ought to have screened you ought to have screened he ought to have screened we ought to have screened you ought to have screened they ought to have screened	I ought to have been screening you ought to have been screening he ought to have been screening we ought to have been screening you ought to have been screening they ought to have been screening

Negation

Simple form	V-ing form
I oughtn't to screen you oughtn't to screen he oughtn't to screen we oughtn't to screen you oughtn't to screen they oughtn't to screen	I oughtn't to be screening you oughtn't to be screening he oughtn't to be screening we oughtn't to be screening you oughtn't to be screening they oughtn't to be screening
Perfect	V-ing perfect
I oughtn't to have screened you oughtn't to have screened he oughtn't to have screened we oughtn't to have screened you oughtn't to have screened they oughtn't to have screened	I oughtn't to have been screening you oughtn't to have been screening he oughtn't to have been screening we oughtn't to have been screening you oughtn't to have been screening they oughtn't to have been screening

Interrogative form

Simple form	V-ing form
ought to I screen? ought to you screen? ought to he screen? ought to we screen? ought to you screen? ought to they screen?	ought to I be screening? ought to you be screening? ought to he be screening? ought to we be screening? ought to you be screening? ought to they be screening?
Perfect	V-ing perfect
ought to I have screened? ought to you have screened? ought to he have screened? ought to we have screened? ought to you have screened? ought to they have screened?	ought to I have been screening? ought to you have been screening? ought to he have been screening? ought to we have been screening? ought to you have been screening? ought to they have been screening?

Interro-negative form

Simple form	V-ing form
oughtn't I to screen? oughtn't you to screen? oughtn't he to screen? oughtn't we to screen? oughtn't you to screen? oughtn't they to screen?	oughtn't I to be screening? oughtn't you to be screening? oughtn't he to be screening? oughtn't we to be screening? oughtn't you to be screening? oughtn't they to be screening?
Perfect	V-ing perfect
oughtn't I to have screened? oughtn't you to have screened? oughtn't he to have screened? oughtn't we to have screened? oughtn't you to have screened? oughtn't they to have screened?	oughtn't I to have been screening? oughtn't you to have been screening? oughtn't he to have been screening? oughtn't we to have been screening? oughtn't you to have been screening? oughtn't they to have been screening?