Conjugation of the verb "investigate"

Conjugation of the verb investigate[ɪnˈvestɪɡeɪt], regular     

investigate not investigateinvestigate?
All forms Indicative Conditional Participles Infinitives

Indicative

Present Indefinite

I investigate
you investigate
he/she/it investigates
we investigate
you investigate
they investigate

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Indicative

Present Indefinite

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

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Indicative

Present Indefinite

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

Present Continuous

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

Present Perfect

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

Present Perfect Continuous

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

Past Indefinite

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

Past Continuous

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

Past Perfect

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

Past Perfect Continuous

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

Future Indefinite

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

Future Continuous

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

Future Perfect

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

Future Perfect Continuous

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

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Conditional

Conditional Present

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

Conditional Present Continuous

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

Conditional Perfect

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

Conditional Perfect Continuous

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

Participles

Present

investigating

Past

investigated

Infinitives

Infinitives

to investigate
to have investigated
to be investigating
to have been investigating
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.