English verb conjugation OUGHT TO PREASCERTAIN

Regular verb: preascertain - preascertained - preascertained

Affirmation

Simple form

I ought to preascertain
you ought to preascertain
he ought to preascertain
we ought to preascertain
you ought to preascertain
they ought to preascertain

V-ing form

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

Perfect

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

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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