طلعت من الشقة وشفت جارتي عالدرج.

A rough pronunciation is:

ṭleʿet mn eš-šiʔʔa w šeft jārti ʿad-daraj

A few notes:

• The exact vowels vary by country, city, and speaker.
• الشقة is often pronounced something like eš-šiʔʔa in urban Levantine.
• عالدرج is often pronounced ʿad-daraj because of contraction plus sound assimilation.

So don’t worry if you hear slightly different versions.

Because the verbs already show the subject.

• طلعت = I went out / I came out
• شفت = I saw

In Levantine, as in Arabic generally, subject pronouns are often omitted when the verb already makes the subject clear. So the sentence sounds natural without أنا.

You can say أنا if you want emphasis, but it is not necessary.

Here, طلعت means something like I went out or I came out.

The verb طلع is very common in Levantine and can cover several related ideas, including:

• go up
• come up
• go out
• come out

The phrase من الشقة tells you the movement is out of the apartment, so here the meaning is clearly I came/went out of the apartment.

Yes — in writing, طلعت can be ambiguous without vowel marks.

Depending on context, it could represent:

• I went out
• she went out

But in this sentence, the next verb شفت means I saw, so the whole sentence is clearly first person: the speaker is talking about what they did.

Context usually removes the ambiguity.

من means from, and after verbs of movement it marks the starting point or source.

So:

• طلعت من الشقة = I went/came out from the apartment
• natural English: I came out of the apartment

This is a very common Arabic pattern:

• movement verb + من
  • place

الشقة means the apartment / the flat.

In Levantine, it is often pronounced roughly like:

eš-šiʔʔa

A few useful points:

• The الـ is the definite article, meaning the.
• Because ش is a sun letter, the l sound of الـ is not pronounced clearly; it blends into the next consonant.
• The middle consonant is often a glottal stop in many urban Levantine pronunciations.

So the written form is الشقة, but the spoken form may sound quite different from what an English speaker expects at first.

Because in Arabic writing, the conjunction و (and) is normally written attached to the following word.

So:

• وشفت = و + شفت
• meaning: and I saw

This is standard Arabic spelling behavior, not something special about this sentence.

Because this is Levantine colloquial Arabic, not Modern Standard Arabic.

In everyday Levantine:

• شاف = to see
• شفت = I saw

In Modern Standard Arabic, you might learn:

• رأى = to see
• رأيت = I saw

So شفت is exactly the kind of form you expect in normal spoken Levantine.

جارتي means my female neighbor.

It breaks down like this:

• جارة = female neighbor
• -ي / -i = my

So:

• جارتي = my female neighbor

If the neighbor were male, you would usually say جاري = my male neighbor.

Because the base word ends in ة (taa marbuuTa).

The word جارة is pronounced like jaara when it stands alone, but when you add a suffix, that hidden t comes back:

• جارة = female neighbor
• جارتي = my female neighbor

This is a very important Arabic pattern:

• سيارة → سيارتي
• غرفة → غرفتي
• جارة → جارتي

So the t is not random; it comes from the feminine ending.

عالدرج is a colloquial contraction of:

على الدرج

In Levantine speech, على often gets shortened before the:

• على + الـ → عالـ

So:

• على الدرج → عالدرج

This is very common in spoken Levantine and also in informal writing.

Because د is a sun letter.

With sun letters, the l of الـ assimilates to the next consonant. So:

• written: الدرج
• pronounced: ad-daraj

Since the sentence has the contracted form عالدرج, the pronunciation often becomes:

ʿad-daraj

The same kind of thing happens in الشقة:

• written: الشقة
• pronounced roughly: eš-šiʔʔa

So this sentence gives you two examples of the same sound rule.

Yes, literally it means on the stairs, but in real usage it can refer to:

• on the stairs
• on the staircase
• in the stairwell
• on the landing

The exact English wording depends on context. Arabic often uses a phrase that is a little broader than a single fixed English equivalent.

So شفت جارتي عالدرج could be understood naturally in English in a few slightly different ways depending on the scene.

Yes, that is understandable, but it is less colloquial and slightly heavier.

Compared with the original:

• أنا is optional unless you want emphasis.
• على الدرج is more full/formal.
• عالدرج sounds more natural in everyday Levantine speech.

So:

• طلعت من الشقة وشفت جارتي عالدرج = very natural spoken Levantine
• أنا طلعت من الشقة وشفت جارتي على الدرج = also correct, but less conversational in tone

In ordinary speech, the shorter original version is exactly what many speakers would say.