المحقق هنا.

A careful full pronunciation in MSA is al-muḥaqqiqu hunā.

In normal pause at the end of words, you will usually hear it as al-muḥaqqiq hunā.

A few pronunciation notes:

• ال = al-
• ح in محقق is a stronger, breathier sound than English h
• ق is a deep q sound made farther back than English k
• the قّ is doubled because of the shadda, so muḥaqqiq has a noticeably long/doubled q

So the key word is not muhaqiq, but mu-ḥaq-qiq.

Because Arabic often leaves out the verb to be in the present tense.

So a sentence like:

المحقق هنا

literally looks like:

the investigator here

but it naturally means:

The investigator is here.

This is very normal in Arabic. In the present tense, nominal sentences usually do not use a separate word for is/am/are.

If you wanted a past-tense version, then Arabic would use a verb, for example:

كان المحقق هنا = The investigator was here

ال is the Arabic definite article, equivalent to the in English.

So:

• محقق = an investigator / investigator
• المحقق = the investigator

In this sentence, the noun is definite, which is why it has ال.

Because the next letter is م, and م is a moon letter, not a sun letter.

With moon letters, the ل in ال is pronounced clearly:

• المحقق = al-muḥaqqiq

If the next letter were a sun letter, the ل would assimilate and you would hear a doubled consonant instead.

So this word keeps the normal al- pronunciation.

المحقق is a noun meaning investigator in this context.

It is derived from the verb حقّق, which can mean things like to investigate, to verify, or to establish depending on context.

The pattern here is the active participle of Form II, so محقق literally has the sense of one who investigates / verifies.

That is why the word can have related meanings in different contexts, such as:

• investigator
• verifier
• sometimes even editor of a text, in scholarly usage

But in your sentence, the intended meaning is already given, so investigator is the right reading.

هنا means here, and grammatically it is an adverb of place.

In this sentence, it functions as the predicate of the nominal sentence:

• المحقق = the topic/subject
• هنا = the predicate, giving the location

So the structure is basically:

[The investigator] [here]

Unlike adjectives, هنا does not change for gender or number. It stays هنا whether the subject is masculine, feminine, singular, or plural.

The fully vowelled form is:

الْمُحَقِّقُ هُنَا

Why?

• المحققُ takes -u because it is the subject/topic of the nominal sentence, so it is nominative
• هنا is an indeclinable adverb, so it stays هنا

In everyday printed Arabic, short vowels are usually omitted, so you normally just see:

المحقق هنا

And in pausal pronunciation, the final -u on المحققُ is often not pronounced.

Yes, it can, but the nuance changes.

• المحقق هنا is the more straightforward, neutral statement: The investigator is here.
• هنا المحقق can sound more like Here is the investigator or give extra emphasis to the location/presentation

So both are possible, but المحقق هنا is the simpler and more neutral version for a learner to start with.

You would change المحقق to the feminine form:

المحققة هنا

fully vowelled:

الْمُحَقِّقَةُ هُنَا

Notice that هنا does not change. Only the noun changes to match the gender.

So:

• المحقق هنا = masculine
• المحققة هنا = feminine