Conjugation of to certify

All tenses of the English verb, with every person.

to certify
To attest to (a fact) as the truth.
regular verb
Infinitivecertify
Past simplecertified
Past participlecertified
-ing formcertifying
Full conjugation of the English verb to certify (past simple certified, past participle certified): present simple and continuous, past simple and continuous, present perfect, past perfect, future, conditional, subjunctive and imperative, with all persons.

Indicative

Present simple

I certify
you certify
he/she/it certifies
we certify
you certify
they certify

Present continuous

I am certifying
you are certifying
he/she/it is certifying
we are certifying
you are certifying
they are certifying

Present perfect

I have certified
you have certified
he/she/it has certified
we have certified
you have certified
they have certified

Present perfect continuous

I have been certifying
you have been certifying
he/she/it has been certifying
we have been certifying
you have been certifying
they have been certifying

Past simple

I certified
you certified
he/she/it certified
we certified
you certified
they certified

Past continuous

I was certifying
you were certifying
he/she/it was certifying
we were certifying
you were certifying
they were certifying

Past perfect

I had certified
you had certified
he/she/it had certified
we had certified
you had certified
they had certified

Past perfect continuous

I had been certifying
you had been certifying
he/she/it had been certifying
we had been certifying
you had been certifying
they had been certifying

Future simple

I will certify
you will certify
he/she/it will certify
we will certify
you will certify
they will certify

Future continuous

I will be certifying
you will be certifying
he/she/it will be certifying
we will be certifying
you will be certifying
they will be certifying

Future perfect

I will have certified
you will have certified
he/she/it will have certified
we will have certified
you will have certified
they will have certified

Future perfect continuous

I will have been certifying
you will have been certifying
he/she/it will have been certifying
we will have been certifying
you will have been certifying
they will have been certifying

Conditional

Present

I would certify
you would certify
he/she/it would certify
we would certify
you would certify
they would certify

Present continuous

I would be certifying
you would be certifying
he/she/it would be certifying
we would be certifying
you would be certifying
they would be certifying

Perfect

I would have certified
you would have certified
he/she/it would have certified
we would have certified
you would have certified
they would have certified

Perfect continuous

I would have been certifying
you would have been certifying
he/she/it would have been certifying
we would have been certifying
you would have been certifying
they would have been certifying

Subjunctive

Present

that I certify
that you certify
that he/she/it certify
that we certify
that you certify
that they certify

Past

if I certified
if you certified
if he/she/it certified
if we certified
if you certified
if they certified

Imperative

Affirmative

you certify
we let's certify

Negative

you don't certify
we let's not certify

Non-finite forms

Infinitive

to certify

Perfect infinitive

to have certified

Present participle / gerund

certifying

Past participle

certified

Conjugations: Wiktionary (via kaikki.org), adapted, licensed under CC BY-SA 4.0.