Polis tanıktan ilk görüşmede şüphelenmiş.

Because the verb şüphelenmek normally takes the ablative case: -den / -dan / -ten / -tan.

So:

• birinden şüphelenmek = to suspect someone
• bir şeyden şüphelenmek = to suspect something / be suspicious of something

That is why tanık becomes:

• tanık = witness
• tanıktan = from the witness / of the witness in the grammatical sense required by şüphelenmek

This is one of those places where Turkish and English structure things differently. English says suspect the witness, but Turkish says something more like be suspicious of/from the witness.

Also, tanıkı would be wrong because the correct accusative form would actually be tanığı, but this verb does not use the accusative here.

Şüphelenmek means to become suspicious or to suspect.

It is built from:

• şüphe = suspicion, doubt
• -lenmek = a verb-forming element that often gives a meaning like become / get / start to be

So şüphelenmek is roughly:

• to become suspicious
• to start suspecting
• to be suspicious

In this sentence, it means the police became suspicious of the witness.

İlk görüşmede means at the first meeting/interview.

Breakdown:

• ilk = first
• görüşme = meeting, interview, discussion
• görüşmede = in / at the meeting

The ending -de / -da / -te / -ta is the locative case, used for location or time contexts like in, at, or during.

So:

• ilk görüşme = the first meeting/interview
• ilk görüşmede = at/during the first meeting/interview

In a police context, görüşme is often best understood as interview rather than just a casual meeting.

Şüphelenmiş is the verb with the -miş past form.

This form often suggests one of these ideas:

• reported/hearsay past: the speaker learned this from someone else
• inferred past: the speaker concludes it from evidence
• sometimes a slightly more detached or narrative tone

So şüphelenmiş is something like:

• apparently became suspicious
• is said to have become suspicious
• seems to have become suspicious

By contrast:

• şüphelendi = simple definite past, often used when the speaker presents it as a direct fact

So the difference is not mainly about time, but about how the speaker knows it or how directly they present it.

Not always. It very often has a hearsay/reportive flavor, but it can also show inference.

For example, depending on context, şüphelenmiş can mean:

• Apparently the police got suspicious of the witness
• It turns out the police had become suspicious of the witness
• The police seem to have become suspicious of the witness

So -miş is broader than just someone told me. It usually signals that the information is not being presented as directly witnessed by the speaker.

Here, polis is most naturally understood as singular: the police officer.

In Turkish, polis can refer to:

• a police officer
• the police as an institution or group, depending on context

Since the verb is singular-looking in meaning here and there is no plural marker, the sentence most naturally reads as:

• The police officer became suspicious of the witness at the first interview

  or possibly, depending on context:

• The police became suspicious of the witness at the first interview

Turkish does not have a/an/the, so context decides a lot.

Because Turkish does not have articles like English a/an/the.

So:

• polis can mean a police officer, the police officer, or sometimes police
• tanık can mean a witness or the witness
• ilk görüşmede can mean at the first meeting/interview

The exact English translation depends on context, not on a separate Turkish word for the.

The sentence order is quite normal:

• Polis = subject
• tanıktan = the person suspected
• ilk görüşmede = time/context
• şüphelenmiş = verb

Turkish word order is flexible, but the verb usually comes at the end.

This sentence has a fairly neutral structure. You could move parts around for emphasis, for example:

• Polis ilk görüşmede tanıktan şüphelenmiş.
• Tanıktan polis ilk görüşmede şüphelenmiş.

These versions can sound slightly different in emphasis, but the core meaning stays the same.

Because in Turkish, verbs often require a specific case, and you simply have to learn them together.

For şüphelenmek, the pattern is:

• birinden şüphelenmek = suspect someone
• bir şeyden şüphelenmek = suspect something

So it is best to memorize the verb as a chunk:

• -den şüphelenmek

This is similar to how in English we learn combinations like:

• depend on
• listen to
• believe in

The grammar partner of the verb matters.

Not necessarily. Görüşme is a broad word that can mean:

• meeting
• interview
• conversation
• discussion

In this sentence, because of the police/witness context, ilk görüşmede most naturally means:

• during the first interview
• at the first meeting with the witness

So the exact nuance depends on context, but interview is a very likely translation here.

Normally, tanık without a plural ending is understood as singular: witness.

If it were clearly plural, you would expect:

• tanıklardan = from the witnesses

So in this sentence, tanıktan strongly suggests from/of the witness, meaning one witness.

The main dictionary forms are:

• polis = police officer, police
• tanık = witness
• ilk = first
• görüşme = meeting, interview, conversation
• şüphelenmek = to suspect, to become suspicious

In the sentence, some of them appear with case or tense endings:

• tanık + -tan → tanıktan
• görüşme + -de → görüşmede
• şüphelen- + -miş → şüphelenmiş

Probably these two:

1. şüphelenmek takes the ablative case

   • birinden şüphelenmek

2. -miş often gives a reported/inferred past meaning

   • şüphelenmiş = apparently / reportedly / it seems that he/she/they suspected

If you remember those two points, the whole sentence becomes much easier to understand.