يناقش المحاور لغة الجسد والتواصل البصري.

يناقش is in the imperfect verb form in MSA. In English, that often corresponds to discusses, is discussing, or sometimes will discuss, depending on context.

Here, the most natural reading is discusses or is discussing.

It comes from the verb ناقش, meaning to discuss. The form يناقش specifically means he discusses / he is discussing.

Because verb–subject–object order is very common in Arabic.

So this sentence is structured like:

يناقش = discusses
المحاور = the moderator / interviewer / interlocutor
لغة الجسد والتواصل البصري = body language and visual communication / eye contact-related communication

So Arabic is doing something like:

Discusses the moderator body language and visual communication.

That sounds odd in English, but it is normal in Arabic.

You could also say:

المحاور يناقش لغة الجسد والتواصل البصري

That is also correct, but it puts the subject first and can feel slightly more emphatic.

There are two main clues:

1. Word order: after a verb, the next noun is often the subject in Arabic.
2. Case, if fully vocalized: it would be المحاورُ, with nominative ending -u, showing it is the subject.

So in a fully vocalized version, you would have:

يُناقِشُ المُحاوِرُ لُغَةَ الجَسَدِ وَالتَّواصُلَ البَصَرِيَّ

Here:

• المحاورُ = nominative, so it is the subject
• لغةَ and التواصلَ = accusative, so they are objects

In normal everyday writing, those short vowels are usually omitted, so learners often rely on word order and meaning.

المحاور literally comes from a word related to dialogue or conversation. Depending on context, it can mean:

• interviewer
• moderator
• host
• discussion leader
• interlocutor

So the exact English word depends on the situation. In a media or panel-discussion context, moderator or interviewer is often a good fit.

Because لغة الجسد is an iḍāfa construction, often called a construct phrase.

It literally works like:

• لغة = language
• الجسد = the body

Together: language of the body = body language

In an iḍāfa:

• the first noun usually does not take ال
• the second noun can be definite with ال
• the whole phrase becomes definite because the second noun is definite

So:

• لغة جسد = a body language / body language of a body
• لغة الجسد = the body language

That is why لغة does not have ال here.

Because this is not an iḍāfa. It is a noun + adjective phrase.

• التواصل = the communication
• البصري = visual

So together it means visual communication.

In Arabic, adjectives must agree with the noun they describe in:

• definiteness
• gender
• number
• case

Since التواصل is definite, the adjective must also be definite:

• التواصل البصري = the visual communication

If the noun were indefinite, the adjective would also be indefinite:

• تواصل بصري = visual communication

So this phrase is different from لغة الجسد:

• لغة الجسد = iḍāfa
• التواصل البصري = noun + adjective

و simply means and.

It joins two things that are both being discussed:

1. لغة الجسد
2. التواصل البصري

So both are direct objects of يناقش.

You can think of the sentence as:

The moderator discusses [body language] and [visual communication].

Yes. In this sentence, the ة in لغة is pronounced as -t, because the word is in an iḍāfa construction and is directly followed by another noun.

So you say:

lughat al-jasad

not just:

lugha

This is a very common point for learners:

• by itself: لغة → lugha
• in iḍāfa: لغة الجسد → lughat al-jasad

In writing, it is والتواصل, but in pronunciation the l of ال is assimilated because ت is a sun letter.

So it is pronounced roughly:

wat-tawāṣul

not:

wal-tawāṣul

This happens because:

• و = wa-
• ال
• تواصل

Since ت is a sun letter, the l sound disappears in pronunciation and the t is doubled.

A fully vocalized version would be:

يُناقِشُ المُحاوِرُ لُغَةَ الجَسَدِ وَالتَّواصُلَ البَصَرِيَّ

This shows the grammar more clearly:

• يُناقِشُ = verb, nominative ending on the imperfect
• المُحاوِرُ = subject, nominative
• لُغَةَ = object, accusative
• الجَسَدِ = genitive, because it is the second term of an iḍāfa
• التَّواصُلَ = second object, accusative
• البَصَرِيَّ = adjective agreeing with التواصل in definiteness, gender, number, and case

Yes. The Arabic imperfect often covers both ideas:

• he discusses
• he is discussing

Arabic does not always separate simple present and present progressive the way English does. Context tells you which is more natural.

So this sentence could be understood as either:

• The moderator discusses body language and visual communication
• The moderator is discussing body language and visual communication

depending on the situation.