انا رح اهتم باختي اليوم لانه امي بالشغل.

A natural breakdown is:

• انا = I
• رح = future marker, like will or going to
• اهتم = I take care / I care / I will take care
• باختي = of my sister or for my sister
• اليوم = today
• لانه = because
• امي = my mother / my mom
• بالشغل = at work

So the structure is basically:

I + will + take care of my sister + today + because + my mom + is at work

رح is a very common Levantine future marker. It tells you the action is in the future:

• اهتم = I take care / I care
• رح اهتم = I will take care

In English, it often matches will or going to.

You may also hear the shorter form حَـ attached to the verb:

• رح اهتم
• حَ اهتم or هتم in some speech styles

All of these are connected to the future in Levantine.

The ending -ي means my.

So:

• اخت = sister
• اختي = my sister

and

• ام = mother
• امي = my mother

In more formal spelling, these are usually written:

• أختي
• أمي

But in casual Arabic writing, especially texting, people often drop the hamza and write:

• اختي
• امي

Same meaning.

Because the verb اهتم normally takes the preposition بـ.

So:

• اهتم بشيء = care about something
• اهتم بحدا = take care of someone / care about someone

That means اهتم باختي literally works like take care of my sister.

This is a good example of how Arabic verbs often need a specific preposition, even if English uses a different structure.

Also, when بـ comes before اختي, it joins onto it in writing:

• ب + اختي = باختي

You can often leave it out.

Arabic verbs already show who is doing the action, so اهتم already tells you it is I.

That means both of these can work:

• انا رح اهتم باختي اليوم
• رح اهتم باختي اليوم

Including انا can add clarity, emphasis, or just sound more conversational. In everyday speech, both are common.

Here لانه means because.

In more formal spelling, you will often see لأنه or sometimes لأنّ depending on context. In casual writing, people commonly write it without hamza marks:

• لانه

In spoken Levantine, this kind of connector is very common and can sound like:

• la2anno
• laanno
• lianno

depending on the speaker and region.

So the main thing to remember is:

• لانه = because

بالشغل means at work.

Literally, it is:

• بـ = in / at
• الشغل = the work / the job

So:

• بالشغل = at work

This is a very common everyday expression in Levantine.

You can think of it as similar to saying:

• she is at her job
• she is at work

Because short prepositions in Arabic usually attach directly to the following word.

So:

• بـ
  • الشغل = بالشغل

This happens a lot in Arabic. For example:

• بالبيت = at home / in the house
• بالمدرسة = at school
• بالشغل = at work

So seeing بـ attached to a noun is completely normal.

Because ش is a sun letter.

When الـ comes before a sun letter, the l sound of ال is not pronounced clearly. Instead, the next consonant gets doubled.

So:

• written: الشغل
• pronounced: roughly ish-shoghl or esh-sheghl

That is why بالشغل sounds like:

• bish-shoghl or
• besh-sheghl

depending on accent.

This is a pronunciation rule, not a meaning change.

It is understandable, and many people will understand it easily. But in very everyday Levantine, if you mean look after / watch / take care of your sister for the day, some speakers might prefer expressions like:

• رح أعتني بأختي
• رح دير بالي على أختي

These can sound a bit more natural for physical care or supervision.

Meanwhile, اهتم بـ can sometimes sound broader, like:

• care about
• pay attention to
• care for

So your sentence is fine, but it may not be the most colloquial option in every situation.

Yes. Arabic word order is fairly flexible.

Your sentence:

• انا رح اهتم باختي اليوم لانه امي بالشغل

You could also hear:

• اليوم رح اهتم باختي لانه امي بالشغل
• رح اهتم اليوم باختي لانه امي بالشغل

These all sound natural, though the emphasis changes slightly.

• putting اليوم earlier can emphasize today
• putting it after the verb can sound very natural in conversation

A rough pronunciation would be:

ana ra7 ehtamm b-ekhti il-yom la2anno emmi bish-shoghl

A few notes:

• رح is often pronounced ra7
• اختي is often pronounced closer to ekhti
• لانه may sound like la2anno
• بالشغل often sounds like bish-shoghl or besh-sheghl

Exact pronunciation will vary by country and city, but that rough version will help you say it understandably.