اول ما وصلت عالبيت، حطيت العصير جنب المجلى.

Here اول ما means as soon as or the moment that.

The ما here is not a negative. It is part of a very common expression:

• أول ما وصلت = as soon as I arrived

So this is different from negative ما in sentences like ما بعرف = I don’t know.

In informal Levantine writing, people very often leave out the hamza in words like أول, so you may see:

• اول
• أول

They mean the same thing. The more careful/formal spelling is أول, but اول is extremely common in everyday typing.

عالبيت is a shortened spoken form of على البيت.

In Levantine, على + الـ often gets contracted in writing and speech:

• على البيت → عالبيت
• على الطريق → عالطريق

So عالبيت literally looks like on the house, but in actual Levantine usage it often means to the house / home.

That is a very common feature of spoken Levantine. For movement toward a place, speakers often use:

• على
• sometimes لـ instead of the more formal إلى.

So in everyday speech:

• رحت عالبيت = I went home
• وصلت عالبيت = I arrived home

Formal إلى is much more common in Modern Standard Arabic than in casual Levantine conversation.

Because the verb usually already shows the subject.

In Levantine, you normally do not need to say أنا unless you want emphasis or contrast. So:

• وصلت = I arrived
• حطيت = I put

You could say أنا وصلت or أنا حطيت, but that would sound more emphatic, like I arrived or I’m the one who put it.

Yes. In unvoweled Arabic spelling, وصلت can be ambiguous.

Depending on context, it can mean:

• I arrived
• you arrived (masculine singular)
• she arrived

That is normal in Arabic. Context tells you which one is meant.

The same kind of ambiguity can happen with حطيت in spoken Levantine:

• حطيت can mean I put or you put (masculine singular), depending on context.

If you want to make it clear, you can add the pronoun:

• أنا وصلت
• إنتَ وصلت

Yes. حطّ is one of the most common colloquial Levantine verbs for to put / to place / to set down.

So:

• حطّيت = I put
• حطّ = put! (to a man)
• حطيتِ / حطيتي = forms used with feminine you, depending on dialect/spelling style

A more formal equivalent in Modern Standard Arabic would be وضعت, but in everyday Levantine حطّ is much more natural.

Because جنب can directly take the noun after it.

So:

• جنب المجلى = next to the sink
• جنب الباب = next to the door

English uses next to as two words, but in Arabic جنب already carries that meaning, so you do not need an extra preposition there.

جنب most often means beside or next to.

It usually suggests fairly close position:

• العصير جنب المجلى = the juice is next to the sink

If you want a looser idea like near, Levantine can also use words such as قريب من.

So جنب is usually a bit more specific than just near.

Yes. المجلى is a Levantine word for the sink, especially the kitchen sink / dishwashing sink.

It is a normal everyday word in many Levantine varieties. Depending on region, you may also hear other words, such as:

• المغسلة
• other local variants

So if you learn المجلى, that is useful, but be aware that vocabulary for household items can vary from one Levantine area to another.

Because the sentence is talking about specific, identifiable things:

• العصير = the juice
• المجلى = the sink

In Arabic, just like in English, speakers often use the definite article when the object is known from the situation.

Also, in connected speech, العصير often sounds like l-ʿaṣīr after a word ending in a vowel, so حطيت العصير may sound more like حطّيت العصير with the article flowing smoothly into the previous word.

Yes, absolutely.

Both are natural, but there is a slight nuance:

• لما وصلت عالبيت = when I arrived home
• أول ما وصلت عالبيت = as soon as I arrived home

So أول ما gives a stronger sense of immediately after arriving.

A rough pronunciation would be:

awwal ma wselet ʿal-bēt, ḥaṭṭēt l-ʿaṣīr janb il-majla

A few notes:

• عالبيت is pronounced roughly ʿal-bēt
• حطيت has a strong ṭṭ sound
• العصير often links to the previous word, so it may sound like l-ʿaṣīr
• pronunciation varies a bit across Syrian, Lebanese, Palestinian, and Jordanian speech

So do not worry if you hear slightly different vowels from different speakers.