هل لديك وقت؟ أخبرني. إلى اللقاء، واعتن بنفسك.

هل introduces a yes/no question. It is like putting do / does / is / are at the start of an English question, but Arabic does not need an extra helping verb.

So:

• لديك وقت = you have time
• هل لديك وقت؟ = Do you have time?

It does not mean what, why, when, etc. It specifically marks a question that can be answered with yes or no.

In Arabic, possession is often expressed without a normal verb equivalent to English have.

Here, لديك literally means something like with you / in your possession / at your disposal, depending on context. So:

• لديك وقت = literally there is time with you
• natural English meaning: you have time

This is very common in Arabic. Other similar ways to express possession include:

• عندك in spoken Arabic and sometimes less formal writing
• لديك in more formal or standard Arabic

So هل لديك وقت؟ is a very natural Modern Standard Arabic way to say Do you have time?

لديك consists of:

• لدى = a formal word meaning with / in the possession of
• ك = the pronoun suffix you

So لديك means you have or more literally with you.

A useful point: the suffix changes depending on who is being addressed.

• لديكَ = you have (to one male)
• لديكِ = you have (to one female)

In normal unvowelled writing, both are usually written the same way: لديك. The pronunciation changes, not the basic spelling.

وقت without ال means time in a general, indefinite sense: some time / any time / time available.

So:

• هل لديك وقت؟ = Do you have time?
• هل لديك الوقت؟ would sound more like Do you have the time? or Do you have the specific time we talked about?

In this sentence, the speaker is asking generally whether the other person is free, so the indefinite وقت is the natural choice.

أخبرني breaks down into:

• أخبر = tell! / inform! (imperative, addressed to one male)
• ني = me

So أخبرني means Tell me or Inform me.

This is a very common Arabic pattern:

• verb
• plus attached object pronoun

Examples:

• ساعدني = help me
• اتركني = leave me
• اسألني = ask me

So the -ني ending is simply the object me attached directly to the verb.

Yes. In Arabic, imperatives change depending on the gender and number of the person you are addressing.

Here are the common forms:

• أخبرني = Tell me (to one male)
• أخبريني = Tell me (to one female)
• أخبراني = Tell me (to two people)
• أخبروني = Tell me (to a group of males or a mixed group)
• أخبرنني = Tell me (to a group of females; formal and less common in everyday use)

So the sentence as written is addressed to one male, unless vowel marks are omitted and the wider context is unclear.

إلى اللقاء is a very common way to say goodbye in Modern Standard Arabic.

Literally, it means:

• إلى = until / to
• اللقاء = the meeting / the encounter

So the whole phrase is like until the next meeting.

It is similar in feeling to expressions like:

• See you
• Until we meet again

It is standard, polite, and very common in formal Arabic.

The و simply means and.

So:

• إلى اللقاء = Goodbye
• واعتن بنفسك = and take care of yourself

Arabic often uses و very freely to connect phrases, sometimes more often than English does. In English, you might say:

• Goodbye. Take care.
• Goodbye, and take care.

Both are natural. Arabic uses the connected version here.

This is a very common learner question, because اعتنى is a verb with a weak final letter.

The verb is:

• اعتنى بـ = to take care of / to look after

When you make the masculine singular imperative, the final weak letter drops, giving:

• اعتنِ = Take care! (to one male)

In ordinary unvowelled writing, this appears as اعتن.

So:

• اعتن بنفسك = Take care of yourself (to one male)

But for a female, you do get the -ي form:

• اعتني بنفسك = Take care of yourself (to one female)

So your expectation of اعتني is correct for the feminine singular, but not for the masculine singular.

بنفسك is made of:

• بـ = with / by
• نفس = self
• ك = your

So literally it means with yourself or yourself.

In this expression, Arabic says:

• اعتن بنفسك = literally take care with yourself
• natural English: take care of yourself

This use of نفس is very common in reflexive-style expressions:

• بنفسي = myself
• بنفسه = himself
• بنفسها = herself

Yes, normally اعتنى takes the preposition بـ when it means to take care of or to pay attention to.

So you say:

• اعتنى بنفسه = he took care of himself
• اعتنِ بصحتك = take care of your health
• يعتني بالأطفال = he takes care of the children

That is why the sentence says اعتن بنفسك and not just اعتن نفسك.

Yes, this is good Modern Standard Arabic, and it sounds fairly polite and neutral.

A native speaker might say different things in everyday spoken Arabic depending on dialect. For example, in many spoken varieties, هل لديك وقت؟ might be replaced by something more like عندك وقت؟

But in MSA:

• هل لديك وقت؟
• أخبرني.
• إلى اللقاء، واعتن بنفسك.

is perfectly natural and correct.

A small style note: أخبرني sounds a bit more direct or formal than casual English let me know, but it is still normal MSA.

Both approaches help here.

A word-for-word breakdown is:

• هل = question marker
• لديك = you have
• وقت = time
• أخبرني = tell me
• إلى اللقاء = until the meeting / goodbye
• واعتن بنفسك = and take care of yourself

But some parts are best learned as natural expressions:

• هل لديك وقت؟ = a standard way to ask Do you have time?
• إلى اللقاء = a fixed farewell expression
• اعتن بنفسك = a fixed way to say take care of yourself

So it is useful to understand the grammar, but also to memorize these chunks as ready-made phrases.