اول ما فتحت الشباك، دخل الهوا في الاوضة.

In Egyptian Arabic, أول ما is a very common way to say when or as soon as.

So:

• أول ما فتحت الشباك = as soon as I opened the window
• literally, it is something like the first moment that...

It often introduces one action that immediately leads to another.

فتحت is the past tense of فتح = to open.

In normal Egyptian Arabic, the subject is often understood from the verb, so you do not need to say أنا for I unless you want emphasis.

So:

• فتحت الشباك = I opened the window

That is completely natural.

Yes. In unvowelled Arabic writing, فتحت can be ambiguous.

Depending on context, it can represent:

• fataḥt = I opened
• fataḥt = you opened (masculine singular)
• fataḥit = she opened

Because short vowels are usually not written, you often rely on context or the translation to know which one is meant.

So if the meaning shown to the learner is As soon as I opened the window..., then that is the intended reading here.

Yes. الشباك means the window, and it is a very common Egyptian Arabic word.

A learner may know the Modern Standard Arabic word:

• نافذة = window

But in everyday Egyptian, شباك is much more natural.

Also notice the الـ at the beginning:

• شباك = a window / window
• الشباك = the window

Because ش is a sun letter. In Arabic, when الـ comes before a sun letter, the l sound is absorbed into the next consonant.

So:

• الشباك is pronounced roughly ish-shubbāk or esh-shebbāk
• not al-shubbāk

This is a very common pronunciation pattern in Arabic.

الهوا here means the air or the breeze.

In Egyptian Arabic, people very often write and say الهوا instead of the more formal الهواء.

So:

• الهوا = everyday Egyptian spelling/pronunciation
• الهواء = more formal / Modern Standard Arabic style

Both refer to air, but الهوا feels very natural in spoken Egyptian.

الأوضة means the room.

This is another everyday Egyptian word. A learner may know the Modern Standard Arabic word:

• غرفة = room

But in Egyptian speech, أوضة is extremely common.

You may also see it written informally as الاوضة without the hamza mark. That is very normal in casual writing.

So:

• أوضة = room
• الأوضة / الاوضة = the room

In Egyptian Arabic, في often covers both in and into, depending on the verb and context.

So:

• دخل في الأوضة = entered the room / went into the room

With a verb like دخل = entered, the meaning of movement is already clear, so في works naturally.

In more formal Arabic, you might expect something like إلى, but in Egyptian everyday speech في is very common here.

Arabic often likes to start a sentence with the verb, especially in storytelling or when describing events in sequence.

So:

• دخل الهوا في الاوضة = the air came into the room
• literally: entered the air into the room

This verb + subject order is very normal.

You could also say:

• الهوا دخل في الاوضة

But that would put more focus on the air itself. The version in your sentence sounds very natural for narration: first one thing happened, then the next thing happened.

Because they are being treated as definite.

• الشباك = the window
  a specific window
• الأوضة = the room
  a specific room, usually understood from context
• الهوا = the air / the breeze
  Arabic often uses the definite form for things like air, weather, and other general natural things

So even if English might just say air came into the room, Arabic very naturally says the air.

A rough pronunciation would be:

awwal ma fataḥt ish-shubbāk, dakhal il-hawa fil-oDa

A few notes:

• أول → awwal
• فتحت → fataḥt
• الشباك → ish-shubbāk / esh-shebbāk
• دخل → dakhal
• الهوا → il-hawa
• في الاوضة → often sounds like fil-oDa

The exact vowels can vary a bit from speaker to speaker, but this gives you a good everyday Egyptian sound.

A more Modern Standard Arabic version might be:

ما إن فتحتُ النافذةَ، دخل الهواءُ إلى الغرفةِ.

The Egyptian sentence sounds much more natural in everyday speech because it uses colloquial vocabulary and structure:

• أول ما instead of a formal connector
• الشباك instead of النافذة
• الهوا instead of الهواء
• الأوضة instead of الغرفة
• في instead of a more formal إلى

So the sentence you have is clearly everyday Egyptian Arabic, not formal written Arabic.