صديقتي اكلت غدا بالجامعة قبل الدرس.

The -ي means my.

So:

• صديقة = a female friend
• صديقتي = my female friend

The reason you get a t sound is that the final ة in صديقة becomes a real t sound when a suffix is added.

So the pattern is:

• صديقة → ṣadīqa
• صديقتي → ṣadīqti / ṣadīʔti

That is very normal in Arabic. The same thing happens in words like:

• سيارة = car
• سيارتي = my car

Because the subject is feminine singular.

صديقتي means my female friend, so the verb has to match that. In the past tense, she ate is:

• أكلت

Compare:

• صديقي أكل = my male friend ate
• صديقتي أكلت = my female friend ate

So the -ت here marks she in the past tense.

It is understandable in Levantine, but it leans a little toward formal / Standard Arabic-style wording.

A Levantine speaker could say it, but some words feel less everyday than others. For example:

• صديقتي is fine, but in casual Levantine many people also say صاحبتي
• غدا for lunch is fine, but casual speech may vary by region
• الدرس is understandable, but at a university people might also say المحاضرة

So the sentence is not wrong, but it feels a bit neutral-to-formal rather than very conversational.

Here it clearly means lunch, because it comes after أكلت.

You eat lunch, so the context removes the ambiguity.

This is useful to know:

• غداء = lunch in formal spelling
• غدًا = tomorrow in formal spelling

But in casual writing, people often leave out hamzas and ending marks, so both can show up as غدا.

In Levantine, tomorrow is very often بكرا, so in real speech there is usually no confusion.

In Levantine, بـ very often means in / at.

So:

• بالجامعة = at the university / in the university

This is extremely common in spoken Arabic. Arabic often uses بـ where English might use in, at, or sometimes even with/by, depending on the context.

You can also hear:

• في الجامعة

That is also possible, but بالجامعة sounds very natural in Levantine.

Meal words are often used without the article after verbs like eat.

So:

• أكلت غدا = she ate lunch

This is similar to how English often says eat breakfast, eat lunch, eat dinner without an article.

That said, in colloquial Arabic, some speakers also say:

• أكلت الغدا

So both patterns can exist, depending on the speaker and dialect. But أكلت غدا is completely understandable.

Because subject–verb–object order is very common in Levantine speech.

So:

• صديقتي أكلت غدا... = My friend ate lunch...

This sounds natural in everyday spoken Arabic.

Starting with the verb is also possible:

• أكلت صديقتي غدا...

But that feels more formal, narrative, or sometimes more focused on the action itself.

A very broad rule is:

• Levantine speech often prefers subject first
• Standard Arabic more often allows or prefers verb first

It means before the lesson / before class.

The word قبل means before, and it can be followed directly by a noun:

• قبل الدرس = before the lesson/class
• قبل الامتحان = before the exam
• قبل الشغل = before work

If you want to say before + a whole action, Levantine usually uses قبل ما + verb:

• قبل ما يبدأ الدرس = before the lesson starts
• قبل ما تروح = before you go

So:

• قبل الدرس = before class
• قبل ما يبدأ الدرس = before the class starts

It is understandable, but not always the most natural choice.

الدرس can mean lesson or class, and learners will understand it. But at a university, many Levantine speakers might more naturally say:

• المحاضرة = the lecture

So depending on the exact situation:

• قبل الدرس = before class / before the lesson
• قبل المحاضرة = before the lecture

If you mean a school class, الدرس is very natural. If you mean a university lecture specifically, المحاضرة may sound more precise.

A common approximate pronunciation would be:

sadiʔti aklet ghada bil-jāmʿa ʔabl id-dars

A few notes:

• صديقتي often sounds like sadiʔti
• أكلت may be heard as aklet or akalet, depending on region and speaking speed
• بالجامعة is roughly bil-jāmʿa
• قبل may sound like ʔabl, abel, or qabl, depending on the dialect
• الدرس is pronounced with the d doubled because د is a sun letter, so you hear something like id-dars or ed-dars

There is no single Levantine pronunciation, because Syrian, Lebanese, Jordanian, and Palestinian speech all differ a bit.

In careful standard spelling, yes, you would normally write:

• أكلت with the hamza
• غداء for lunch

So a more formal written version would be:

صديقتي أكلت غداءً في الجامعة قبل الدرس.

But in casual writing, especially online or in text messages, people often simplify spelling and leave out hamzas or other formal marks. So forms like:

• اكلت
• غدا

are very common in informal writing.

So the sentence you have is normal for casual written Arabic, even if it is not the most fully formal spelling.