لماذا يجب عليك أن تستيقظ مبكرا غدا؟

لماذا means why, so it naturally introduces a question asking for a reason.

In Arabic, question words like لماذا usually come near the beginning of the sentence, just as why does in English.

So:

• لماذا = why
• لماذا يجب عليك...؟ = Why must you / why do you have to...?

It is very common to start a question this way in Modern Standard Arabic.

يجب عليك literally means something like it is necessary upon you.

This is a very common Arabic way to express must, have to, or should depending on context.

Breakdown:

• يجب = it is necessary / it is required
• عليك = on you / upon you

Together:

• يجب عليك أن تستيقظ... = You must / you have to wake up...

Arabic often uses this kind of impersonal structure where English would simply use you must.

Because عليك already includes the idea of you.

It is made from:

• على = on
• ـك = you (masculine singular object suffix)

So عليك means on you / upon you.

In this structure, Arabic does not need أنت. Saying يجب عليك is already complete and natural.

You could add أنت for emphasis in some contexts, but normally it is unnecessary.

After يجب عليك, Arabic commonly uses أن before the following verb.

Here أن is a particle that introduces another verb, similar to to in English in some contexts, though it is not always translated directly.

So:

• يجب عليك أن تستيقظ = you must wake up
• more literally: it is necessary for you to wake up

This pattern is extremely common:

• يجب أن تدرس = you must study
• أريد أن أذهب = I want to go
• يمكن أن يأتي = he can come / it is possible that he comes

تستيقظ is the present-tense form meaning you wake up or you wake yourself up, depending on context.

In this sentence it is addressing one male person, so the form is second person masculine singular.

That is why it is:

• تستيقظ = you wake up (to one man or boy)

Related forms:

• تستيقظين = you wake up (to one woman)
• تستيقظون = you wake up (to a group of males or mixed group)
• أستيقظ = I wake up

So the form changes depending on who is being addressed.

Yes. In formal grammar, أن puts the following present-tense verb into the subjunctive.

So after أن, the verb is technically in the mansūb form.

For this particular verb, however, the written shape usually looks the same in normal unvocalized Arabic:

• تستيقظ

If full vowel markings were added, the final vowel would show the grammatical effect more clearly. But in everyday printed Arabic, learners often do not see that difference because short vowels are usually omitted.

So the important practical point is:

• after أن, expect a present-tense verb
• grammatically, that verb is in the subjunctive

مبكرا means early, and here it functions as an adverb, telling us when the waking up happens.

So:

• تستيقظ مبكرا = wake up early

In fully vocalized Arabic, it is often written مبكرًا with tanwīn fatḥ because it is in the accusative form, which is common for adverbial expressions.

A learner can think of it simply as:

• مبكرا = early

This is a very common pattern in Arabic, where an adjective can be used adverbially.

غدا means tomorrow, and putting time expressions near the end is very normal in Arabic.

So:

• أن تستيقظ مبكرا غدا = to wake up early tomorrow

Arabic word order is somewhat flexible, so you may also hear or read variations such as:

• لماذا يجب عليك أن تستيقظ غدا مبكرا؟

But the version you were given is completely natural and straightforward.

In general, Arabic often places adverbs of time after the verb phrase.

Yes, that is also possible.

• لماذا يجب عليك أن تستيقظ مبكرا غدا؟
• لماذا يجب أن تستيقظ مبكرا غدا؟

Both can mean Why do you have to wake up early tomorrow?

The version with عليك makes the obligation feel a bit more explicitly directed at you. The version without it is also very common and natural.

So both are correct, but يجب عليك is a particularly clear way to say you have to.

You would change the parts that refer to you.

The masculine singular version is:

• لماذا يجب عليك أن تستيقظ مبكرا غدا؟

To a woman, it becomes:

• لماذا يجب عليكِ أن تستيقظي مبكرا غدا؟

Changes:

• عليك → عليكِ
• تستيقظ → تستيقظي

So Arabic marks gender in both the pronoun suffix and the verb form.

A careful pronunciation would be approximately:

limādhā yajibu ʿalayka an tastayqiẓa mubakkiran ghadan?

A few helpful notes:

• لماذا = li-mā-dhā
• يجب = ya-ji-bu
• عليك = ʿa-lay-ka
• أن = an
• تستيقظ = roughly tas-tay-qiẓ
• مبكرا = mu-bak-ki-ran
• غدا = gha-dan

In normal speech, case endings are often reduced or not pronounced fully, especially outside very formal reading.

Yes. Arabic uses ؟ instead of ?

So the sentence correctly ends with:

• لماذا يجب عليك أن تستيقظ مبكرا غدا؟

The mark is visually reversed because Arabic is written right to left.