English verb conjugation OUGHT TO ASCERTAIN

Regular verb: ascertain - ascertained - ascertained

Affirmation

Simple form

I ought to ascertain
you ought to ascertain
he ought to ascertain
we ought to ascertain
you ought to ascertain
they ought to ascertain

V-ing form

I ought to be ascertaining
you ought to be ascertaining
he ought to be ascertaining
we ought to be ascertaining
you ought to be ascertaining
they ought to be ascertaining

Perfect

I ought to have ascertained
you ought to have ascertained
he ought to have ascertained
we ought to have ascertained
you ought to have ascertained
they ought to have ascertained

V-ing perfect

I ought to have been ascertaining
you ought to have been ascertaining
he ought to have been ascertaining
we ought to have been ascertaining
you ought to have been ascertaining
they ought to have been ascertaining

Negation

Simple form

I oughtn't to ascertain
you oughtn't to ascertain
he oughtn't to ascertain
we oughtn't to ascertain
you oughtn't to ascertain
they oughtn't to ascertain

V-ing form

I oughtn't to be ascertaining
you oughtn't to be ascertaining
he oughtn't to be ascertaining
we oughtn't to be ascertaining
you oughtn't to be ascertaining
they oughtn't to be ascertaining

Perfect

I oughtn't to have ascertained
you oughtn't to have ascertained
he oughtn't to have ascertained
we oughtn't to have ascertained
you oughtn't to have ascertained
they oughtn't to have ascertained

V-ing perfect

I oughtn't to have been ascertaining
you oughtn't to have been ascertaining
he oughtn't to have been ascertaining
we oughtn't to have been ascertaining
you oughtn't to have been ascertaining
they oughtn't to have been ascertaining

Interrogative form

Simple form

ought to I ascertain?
ought to you ascertain?
ought to he ascertain?
ought to we ascertain?
ought to you ascertain?
ought to they ascertain?

V-ing form

ought to I be ascertaining?
ought to you be ascertaining?
ought to he be ascertaining?
ought to we be ascertaining?
ought to you be ascertaining?
ought to they be ascertaining?

Perfect

ought to I have ascertained?
ought to you have ascertained?
ought to he have ascertained?
ought to we have ascertained?
ought to you have ascertained?
ought to they have ascertained?

V-ing perfect

ought to I have been ascertaining?
ought to you have been ascertaining?
ought to he have been ascertaining?
ought to we have been ascertaining?
ought to you have been ascertaining?
ought to they have been ascertaining?

Interro-negative form

Simple form

oughtn't I to ascertain?
oughtn't you to ascertain?
oughtn't he to ascertain?
oughtn't we to ascertain?
oughtn't you to ascertain?
oughtn't they to ascertain?

V-ing form

oughtn't I to be ascertaining?
oughtn't you to be ascertaining?
oughtn't he to be ascertaining?
oughtn't we to be ascertaining?
oughtn't you to be ascertaining?
oughtn't they to be ascertaining?

Perfect

oughtn't I to have ascertained?
oughtn't you to have ascertained?
oughtn't he to have ascertained?
oughtn't we to have ascertained?
oughtn't you to have ascertained?
oughtn't they to have ascertained?

V-ing perfect

oughtn't I to have been ascertaining?
oughtn't you to have been ascertaining?
oughtn't he to have been ascertaining?
oughtn't we to have been ascertaining?
oughtn't you to have been ascertaining?
oughtn't they to have been ascertaining?

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