الأنبوب الداخلي قرب مضخة الهواء.

In Arabic, the verb to be is usually omitted in the present tense.

So:

• الأنبوب الداخلي = the inner tube
• قرب مضخة الهواء = near the air pump

Together, the sentence means The inner tube is near the air pump, even though Arabic does not say a separate word for is here.

If you wanted the past tense, Arabic would usually use a verb, for example:

• كان الأنبوب الداخلي قرب مضخة الهواء = The inner tube was near the air pump

It can be understood as a full sentence in Modern Standard Arabic.

A natural grammatical analysis is:

• الأنبوب الداخلي = the subject
• قرب مضخة الهواء = the predicate / location

So it works like The inner tube is near the air pump.

In some contexts, though, it could also feel like a short label or caption, especially if it appears in a diagram or technical manual.

In Arabic, adjectives normally come after the noun they describe.

So:

• الأنبوب = the tube
• الداخلي = internal / inner

Together:

• الأنبوب الداخلي = the inner tube

This is the normal Arabic order, unlike English, where adjectives usually come before the noun.

Because Arabic adjectives must agree with the noun they describe in definiteness.

Here:

• الأنبوب = the tube
• so the adjective must also be definite:
• الداخلي = the internal / inner

That gives:

• الأنبوب الداخلي = the inner tube

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

• أنبوب داخلي = an inner tube

الداخلي literally means internal or inner.

It comes from the root idea of inside / interior. In context, it describes the tube as the one that is inside, so English may translate it as:

• inner
• internal

The best choice depends on context. In everyday translation, inner tube is often the most natural English phrase.

قرب in this sentence functions like near.

In traditional Arabic grammar, it is often treated as a noun of place / ظرف used in a prepositional way. For a learner, the easiest thing is to understand it as meaning:

• near

So:

• قرب مضخة الهواء = near the air pump

You may also see related forms like:

• بالقرب من = near / close to
• قريب من = close to

All of these express nearness, though the structure is slightly different.

Arabic has more than one way to say near.

This sentence uses:

• قرب + noun
• قرب مضخة الهواء = near the air pump

Another common pattern is:

• بالقرب من مضخة الهواء
• قريب من مضخة الهواء

All are possible, but قرب by itself is a concise and common way to express location.

Because مضخة الهواء is an iḍāfa construction, also called a possessive or noun-link construction.

It literally looks like:

• pump of the air

But in English, we usually translate it as:

• the air pump

In an iḍāfa:

• the first noun usually does not take الـ
• the second noun can make the whole phrase definite

So:

• مضخة هواء = an air pump
• مضخة الهواء = the air pump

Even though مضخة has no الـ, the whole phrase is definite because الهواء is definite.

الهواء means the air.

In Arabic, many things that are understood as a general substance or known entity often appear with الـ. Here, الهواء is definite, and that makes the whole iḍāfa phrase definite:

• مضخة الهواء = the air pump

If you said مضخة هواء, that would usually mean an air pump.

An iḍāfa links two nouns together.

Pattern:

• noun 1 + noun 2

Meaning:

• noun 1 of noun 2
• or often a natural English compound noun

So:

• مضخة = pump
• الهواء = the air

Together:

• مضخة الهواء = pump of the air = the air pump

Important features of iḍāfa:

1. The first noun usually does not take الـ
2. The second noun is in the genitive
3. The whole phrase becomes definite if the second noun is definite

A fully vowelled version would commonly be:

• الأَنْبُوبُ الدَّاخِلِيُّ قُرْبَ مِضَخَّةِ الْهَوَاءِ

A rough breakdown:

• الأَنْبُوبُ → nominative, because it is the subject
• الدَّاخِلِيُّ → nominative, matching the noun
• قُرْبَ → often treated as an adverbial accusative form
• مِضَخَّةِ → genitive after قرب
• الْهَوَاءِ → genitive as the second term of the iḍāfa

In normal unvowelled writing, these endings are not shown, so learners usually read:

• الأنبوب الداخلي قرب مضخة الهواء

The noun مضخة ends in ـة (tāʾ marbūṭa), which usually marks a feminine noun.

So grammatically, مضخة is feminine.

That matters if you later describe it with an adjective or refer to it with a pronoun. For example:

• مضخة الهواء كبيرة = The air pump is big
• هي جديدة = It is new
  Here هي is the feminine pronoun because مضخة is feminine.

You would remove الـ from both the noun and its adjective:

• أنبوب داخلي قرب مضخة الهواء

That means:

• An inner tube is near the air pump or
• An inner tube near the air pump, depending on context

Because the noun is indefinite, the adjective must also be indefinite:

• أنبوب
• داخلي

Yes. The exact translation depends on context.

• أنبوب can mean tube, pipe, or sometimes similar technical objects.
• داخلي can mean inner or internal.

So possible translations include:

• the inner tube
• the internal tube
• the internal pipe

If the sentence appears in a bicycle context, inner tube may be best. In a mechanical or industrial context, internal pipe/tube may be more natural.

A careful pronunciation would be approximately:

• al-anbūb ad-dākhilī qurb miḍakhkhat il-hawāʾ

A few notes:

• الداخلي is pronounced ad-dākhilī, not al-dākhilī, because د is a sun letter, so the l sound assimilates.
• مضخة has a doubled kh sound in careful pronunciation: miḍakhkha
• الهواء ends with a hamza sound: hawāʾ

Exact pronunciation can vary somewhat depending on reading style and whether full case endings are pronounced.

The most useful things to notice are:

1. No present-tense verb "to be"

   • Arabic says الأنبوب الداخلي قرب مضخة الهواء
   • English says The inner tube is near the air pump

2. Adjective after noun

   • الأنبوب الداخلي
   • literally the tube the-inner

3. Adjective agreement

   • both are definite: الأنبوب / الداخلي

4. Use of قرب for location

   • قرب مضخة الهواء = near the air pump

5. Iḍāfa in مضخة الهواء

   • literally pump of the air
   • naturally the air pump

It is a short sentence, but it contains several very common Arabic patterns.