El testigo negó el hecho.

Negó is the preterite (also called the simple past) of negar.

Here it means that the denial happened as a completed action in the past: the witness denied it at a specific moment or in a finished event.

• niega = he/she denies
• negaba = he/she was denying / used to deny
• negó = he/she denied

So El testigo negó el hecho uses a past tense that presents the action as completed.

The accent mark shows where the stress goes: ne-GÓ.

It is also useful because it distinguishes this form from other forms of the verb:

• nego would be pronounced differently and is not the correct form here
• negó = he/she denied

In Spanish, written accents are often essential for showing the correct pronunciation and sometimes for distinguishing verb forms.

The base verb is negar, meaning to deny.

Negó is the third-person singular preterite form:

• yo negué = I denied
• tú negaste = you denied
• él/ella/usted negó = he/she/you denied

So in the sentence, el testigo is the subject, and negó agrees with that singular subject.

Yes. Testigo is a noun that can refer to either a male or a female witness.

It is often treated as a common-gender noun, which means the article shows the gender:

• el testigo = the male witness
• la testigo = the female witness

So if the witness were a woman, you could say La testigo negó el hecho.

Hecho can mean several related things depending on context, including:

• fact
• act
• event
• deed

In a sentence like this, el hecho often means the fact or the event in question, depending on the wider context.

So even if the English translation you saw gives one specific meaning, remember that hecho is a flexible word and the exact nuance depends on the situation.

The personal a is normally used before a specific human direct object.

Here, el hecho is not a person; it is a thing, fact, or event. So there is no personal a.

Compare:

• Vio al testigo = He/she saw the witness.
  Here a appears because testigo is a person.
• Negó el hecho = He/she denied the fact/event.
  No a, because hecho is not a person.

In Spanish, negar usually takes a direct object directly, without a preposition.

So:

• negar algo = to deny something
• negó el hecho = he/she denied the fact/event

This is normal Spanish structure. English learners sometimes expect an extra word because English phrasing can vary, but in Spanish negar commonly connects straight to the thing being denied.

Yes, but that would be a different structure.

• El testigo negó el hecho = The witness denied the fact/event.
• El testigo negó que... = The witness denied that...

After negar que, Spanish normally continues with a clause, often with the subjunctive:

• El testigo negó que estuviera allí = The witness denied that he/she was there.

So negar + noun and negar que + clause are both common, but they are not exactly the same structure.

Yes, Spanish word order is somewhat flexible, but El testigo negó el hecho is the most neutral and natural order.

This is the standard pattern:

• subject: El testigo
• verb: negó
• object: el hecho

You might see other orders in special contexts for emphasis, but this basic order is the clearest one for learners.

In Spain Spanish, testigo is pronounced roughly tes-TI-go.

A few useful points:

• Stress is on the second syllable: ti
• The g in go is a hard g, like in go
• The t and d sounds in Spanish are generally cleaner and less aspirated than in English

A rough English-friendly guide would be: tehs-TEE-go.

In Spain Spanish, hecho is roughly E-cho.

Important points:

• The h is silent
• The ch is like the ch in church
• Stress falls on the first syllable: HE-cho

A rough guide is: EH-cho.

Yes. Its most common meaning is to deny, but depending on context it can also suggest:

• refusing to acknowledge something
• rejecting something
• saying something is not true

For example:

• Negó la acusación = He/she denied the accusation.
• Negó haber estado allí = He/she denied having been there.

So negar often carries the idea of stating that something is not true or refusing to accept it.

Because the direct object is already expressed explicitly as el hecho.

Spanish can use a pronoun instead when the object is known from context:

• El testigo negó el hecho = The witness denied the fact/event.
• El testigo lo negó = The witness denied it.

So there is no need for lo here, since the sentence already names what was denied.