Il prigioniero parla con Marco.

Because Italian normally uses a definite article before a specific singular noun. Here, il prigioniero means the prisoner, referring to a particular prisoner, not just any prisoner.

If you said only prigioniero here, it would sound incomplete in normal standard Italian.

Italian has different forms of the depending on the sound that follows.

• il is used before most masculine singular nouns beginning with a normal consonant:
  il libro, il ragazzo, il prigioniero
• lo is used before masculine singular nouns beginning with:
  • z: lo zio
  • s + consonant: lo studente
  • ps: lo psicologo
  • gn: lo gnomo
  • x: lo xilofono

Since prigioniero begins with pr-, it takes il.

Parla is the third-person singular present indicative of parlare (to speak, to talk).

So it can mean:

• he speaks
• she speaks
• it speaks
• and, depending on context, he/she is speaking

In this sentence, the subject is il prigioniero, so parla agrees with that singular subject.

It can mean either, depending on context.

The Italian present tense often covers both:

• he speaks
• he is speaking

If Italian wants to stress that the action is happening right now, it can also use:

• Il prigioniero sta parlando con Marco. = The prisoner is speaking with Marco.

But the simple present parla is very common and natural.

Because con means with, and parlare con qualcuno means to speak with someone or to talk with someone.

So:

• parlare con Marco = to speak with Marco

Italian can also use parlare a qualcuno, which is closer to to speak to someone:

• Il prigioniero parla a Marco.

The difference is small in many situations:

• con suggests a conversation or interaction
• a can sound a little more one-directional

But both are common.

In standard Italian, first names usually do not take an article.

So you say:

• Marco
• Giulia
• Paolo

not normally il Marco or la Giulia in standard usage.

In some regional varieties of Italian, especially in parts of northern Italy, people may use an article before a first name in everyday speech, but that is not the standard form being used here.

No. Italian usually does not require subject pronouns the way English does.

The verb ending already tells you it is third-person singular, and here the subject is stated explicitly anyway:

• Il prigioniero parla con Marco.

If the subject were already clear from context, Italian could simply say:

• Parla con Marco.

That could mean:

• He is speaking with Marco
• She is speaking with Marco

depending on context.

Yes, prigioniero is masculine singular.

Other forms are:

• il prigioniero = the male prisoner
• la prigioniera = the female prisoner
• i prigionieri = the male prisoners / the prisoners (mixed group)
• le prigioniere = the female prisoners

So the ending changes in the usual way:

• -o for masculine singular
• -a for feminine singular
• -i for masculine plural
• -e for feminine plural

Yes, but changing the word order can change either the meaning or the emphasis.

For example:

• Il prigioniero parla con Marco.
  The prisoner is the subject.

• Marco parla con il prigioniero.
  Marco is now the subject.

Italian does allow more flexibility than English, but the basic neutral order is still:

subject + verb + complement

So the original sentence is the most straightforward, natural version.

A rough pronunciation is:

pree-joh-NYEH-roh

A few helpful points:

• gi here sounds like the j in job
• pri-gio-nie-ro has the stress on nie
• the r in Italian is usually tapped or lightly rolled

And the whole sentence is roughly:

eel pree-joh-NYEH-ro PAR-lah kon MAR-koh

Yes, but it is not exactly the same in tone.

• prigioniero = prisoner
• carcerato = prisoner / inmate, often sounding a bit more formal or institutional

Prigioniero is a very common and straightforward word, so it is a good basic choice for learners.