شاحنة النقل تحمل الحمولة الممتلئة.

Because شاحنة النقل is an iḍāfa construction, often called a construct phrase.

In an iḍāfa:

• the first noun does not take الـ
• the second noun tells you what the first noun is connected to
• the whole phrase becomes definite if the second noun is definite

So:

• شاحنة = a truck / truck
• النقل = the transport / transport
• شاحنة النقل = the transport truck or literally truck of transport

Even without الـ on شاحنة, the whole phrase is definite because النقل is definite.

النقل is the second part of the iḍāfa: شاحنة النقل.

It means transport, hauling, or conveyance. In English, Arabic iḍāfa phrases are often translated like an adjective-noun combination:

• شاحنة النقل = transport truck
• literally: truck of transport

Grammatically, النقل is in the genitive case because it is the second noun in the iḍāfa.

Because the subject شاحنة is grammatically feminine singular.

So the verb must agree with it:

• تحمل = she carries / it carries for a feminine singular subject
• يحمل would be used with a masculine singular subject

Since شاحنة ends in ـة, it is a feminine noun, so Arabic uses the feminine verb form.

تحمل is the imperfect form of the verb.

In Modern Standard Arabic, the imperfect can express several English ideas depending on context, including:

• carries
• is carrying
• does carry

So by itself, تحمل does not force only one English tense. Context decides the best translation.

It comes from the root ح م ل, which is connected with carrying, bearing, or loading.

Because الممتلئة is an adjective describing الحمولة, and in Arabic adjectives must match the nouns they describe.

They must agree in:

• definiteness
• gender
• number
• case

So if the noun is definite:

• الحمولة = the load / the cargo

then the adjective must also be definite:

• الممتلئة = the full / filled

That is why you get:

• الحمولة الممتلئة = the full load

not الحمولة ممتلئة in this structure.

Because it describes الحمولة, and حمولة is a feminine singular noun.

So the adjective must also be feminine singular:

• masculine: ممتلئ
• feminine: ممتلئة

This word comes from the verb امتلأ = to become full.
So ممتلئة means full or filled up.

With full case endings, the sentence would be:

شاحنةُ النقلِ تحملُ الحمولةَ الممتلئةَ

Here is the breakdown:

• شاحنةُ = nominative, because it is the main subject
• النقلِ = genitive, because it is the second term of the iḍāfa
• تحملُ = imperfect indicative
• الحمولةَ = accusative, because it is the direct object
• الممتلئةَ = accusative, matching الحمولة

In normal Arabic writing, these short vowel endings are usually not written, but they are still understood grammatically.

It is usually analyzed as a nominal sentence because it begins with a noun phrase:

• شاحنة النقل = the transport truck

Then the predicate is a verbal clause:

• تحمل الحمولة الممتلئة = carries the full load

So the structure is roughly:

• subject/topic: شاحنة النقل
• predicate/comment: تحمل الحمولة الممتلئة

A learner does not always need to worry too much about this distinction at first, but that is the standard analysis.

It is written النقل, but normally pronounced an-naql, not al-naql.

That is because ن is a sun letter, so the ل of الـ is not pronounced separately. Instead, the following consonant is doubled.

So:

• written: النقل
• pronounced: an-naql

In the full phrase:

• شاحنة النقل
• pronounced roughly: shāḥinat an-naql

Because in an iḍāfa construction, the first noun is in the construct state.

A feminine noun ending in ـة is often pronounced with a t sound when another word follows closely in grammar, especially in careful MSA pronunciation.

So:

• by itself: شاحنة ≈ shāḥina
• in iḍāfa: شاحنة النقل ≈ shāḥinat an-naql

That pronounced t reflects the underlying tāʾ marbūṭa.

No. It is grammatical and understandable, but Arabic can express this idea in more than one way.

For example:

• الحمولة الممتلئة = the full/filled load
• الحمولة الكاملة = the complete load / full load
• الحمولة المملوءة = the loaded/filled cargo

The given phrase is fine for learning grammar, especially adjective agreement. In real usage, the most natural choice can depend on context.