jack: verb conjugation and noun forms

Singular and plural for jack[dʒæk]     

Singular
Plural
Singular
Common case
jack
jacks
Possessive case
jack's
jacks'
Plural
jacks
jacks'

Conjugation of the verb jack[dʒæk], regular     

jack not jackjack?
All forms Indicative Conditional Participles Infinitives

Indicative

Present Indefinite

I jack
you jack
he/she/it jacks
we jack
you jack
they jack

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Indicative

Present Indefinite

I don't jack
you don't jack
he/she/it doesn't jack
we don't jack
you don't jack
they don't jack

Present Continuous

I am not jacking
you aren't jacking
he/she/it isn't jacking
we aren't jacking
you aren't jacking
they aren't jacking

Present Perfect

I haven't jacked
you haven't jacked
he/she/it hasn't jacked
we haven't jacked
you haven't jacked
they haven't jacked

Present Perfect Continuous

I haven't been jacking
you haven't been jacking
he/she/it hasn't been jacking
we haven't been jacking
you haven't been jacking
they haven't been jacking

Past Indefinite

I didn't jack
you didn't jack
he/she/it didn't jack
we didn't jack
you didn't jack
they didn't jack

Past Continuous

I wasn't jacking
you weren't jacking
he/she/it wasn't jacking
we weren't jacking
you weren't jacking
they weren't jacking

Past Perfect

I hadn't jacked
you hadn't jacked
he/she/it hadn't jacked
we hadn't jacked
you hadn't jacked
they hadn't jacked

Past Perfect Continuous

I hadn't been jacking
you hadn't been jacking
he/she/it hadn't been jacking
we hadn't been jacking
you hadn't been jacking
they hadn't been jacking

Future Indefinite

I shan't / won't jack
you won't jack
he/she/it won't jack
we shan't / won't jack
you won't jack
they won't jack

Future Continuous

I shan't / won't be jacking
you won't be jacking
he/she/it won't be jacking
we shan't / won't be jacking
you won't be jacking
they won't be jacking

Future Perfect

I shan't / won't have jacked
you won't have jacked
he/she/it won't have jacked
we shan't / won't have jacked
you won't have jacked
they won't have jacked

Future Perfect Continuous

I shan't / won't have been jacking
you won't have been jacking
he/she/it won't have been jacking
we shan't / won't have been jacking
you won't have been jacking
they won't have been jacking

Indicative

Present Indefinite

do I jack?
do you jack?
does he/she/it jack?
do we jack?
do you jack?
do they jack?

Present Continuous

am I jacking?
are you jacking?
is he/she/it jacking?
are we jacking?
are you jacking?
are they jacking?

Present Perfect

have I jacked?
have you jacked?
has he/she/it jacked?
have we jacked?
have you jacked?
have they jacked?

Present Perfect Continuous

have I been jacking?
have you been jacking?
has he/she/it been jacking?
have we been jacking?
have you been jacking?
have they been jacking?

Past Indefinite

did I jack?
did you jack?
did he/she/it jack?
did we jack?
did you jack?
did they jack?

Past Continuous

was I jacking?
were you jacking?
was he/she/it jacking?
were we jacking?
were you jacking?
were they jacking?

Past Perfect

had I jacked?
had you jacked?
had he/she/it jacked?
had we jacked?
had you jacked?
had they jacked?

Past Perfect Continuous

had I been jacking?
had you been jacking?
had he/she/it been jacking?
had we been jacking?
had you been jacking?
had they been jacking?

Future Indefinite

will I jack?
will you jack?
will he/she/it jack?
will we jack?
will you jack?
will they jack?

Future Continuous

will I be jacking?
will you be jacking?
will he/she/it be jacking?
will we be jacking?
will you be jacking?
will they be jacking?

Future Perfect

will I have jacked?
will you have jacked?
will he/she/it have jacked?
will we have jacked?
will you have jacked?
will they have jacked?

Future Perfect Continuous

will I have been jacking?
will you have been jacking?
will he/she/it have been jacking?
will we have been jacking?
will you have been jacking?
will they have been jacking?

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Conditional

Conditional Present

I wouldn't jack
you wouldn't jack
he/she/it wouldn't jack
we wouldn't jack
you wouldn't jack
they wouldn't jack

Conditional Present Continuous

I wouldn't be jacking
you wouldn't be jacking
he/she/it wouldn't be jacking
we wouldn't be jacking
you wouldn't be jacking
they wouldn't be jacking

Conditional Perfect

I wouldn't have jacked
you wouldn't have jacked
he/she/it wouldn't have jacked
we wouldn't have jacked
you wouldn't have jacked
they wouldn't have jacked

Conditional Perfect Continuous

I wouldn't have been jacking
you wouldn't have been jacking
he/she/it wouldn't have been jacking
we wouldn't have been jacking
you wouldn't have been jacking
they wouldn't have been jacking

Conditional

Conditional Present

would I jack?
would you jack?
would he/she/it jack?
would we jack?
would you jack?
would they jack?

Conditional Present Continuous

would I be jacking?
would you be jacking?
would he/she/it be jacking?
would we be jacking?
would you be jacking?
would they be jacking?

Conditional Perfect

would I have jacked?
would you have jacked?
would he/she/it have jacked?
would we have jacked?
would you have jacked?
would they have jacked?

Conditional Perfect Continuous

would I have been jacking?
would you have been jacking?
would he/she/it have been jacking?
would we have been jacking?
would you have been jacking?
would they have been jacking?

Participles

Present

jacking

Past

jacked

Infinitives

Infinitives

to jack
to have jacked
to be jacking
to have been jacking

Singular and plural for Jack     

Singular
Singular
Common case
Jack
Possessive case
Jack's
Jack
Jack's
Did you find any mistake or inaccuracy? Please write to us.

English Verb Conjugation Online

PROMT.One helps you quickly check English verb forms online. Enter a verb and instantly get a table with the base form, the 3rd person singular form, the Past Simple form, the Past Participle form, and the -ing form, as well as conjugation across all 12 tenses with examples.

What the Table Shows

The service displays English verb forms by person, number, and tense, including regular, irregular, and phrasal verbs. This is useful for studying, translation, writing, and quick grammar checks.

How to Use It

  • Enter an English verb in the search box.
  • Click Search.
  • Get a table of forms, tenses, and usage examples.

Frequently Asked Questions

Which forms does the service show?
The base form, the 3rd person singular form, the Past Simple form, the Past Participle form, and the -ing form.

Does the service show irregular verbs?
Yes. PROMT.One shows irregular English verb forms and their usage across tenses.

Can I check a phrasal verb?
Yes. The service supports phrasal verbs and shows their forms together with examples.

Try it now: enter an English verb and get a complete table of forms and tenses in PROMT.One.

PROMT.One is a fast and helpful tool for any language learner. Check the conjugation of verbs and see the table of tenses for English, German, Russian, French, Italian, Portuguese and Spanish.