Προφανώς έχεις κουραστεί πολύ, αφού δουλεύεις από το πρωί.

Προφανώς means obviously, clearly, or apparently depending on context.

In this sentence, it introduces the speaker’s conclusion:

• Προφανώς έχεις κουραστεί πολύ = Obviously / Clearly, you’ve gotten very tired

It is an adverb, and it often appears near the beginning of the sentence to comment on the whole statement.

Έχεις κουραστεί is a perfect-like form built with:

• έχεις = you have
• κουραστεί = form of κουράζομαι = to get tired

Together, έχεις κουραστεί means:

• you have gotten tired
• you’ve become tired
• in natural English, often simply you’re tired

This form emphasizes a resulting state: something happened earlier, and the result is true now.
So the idea is not just you got tired at some point, but you are now in a tired state because of what has happened.

The base verb is κουράζομαι, which means I get tired or I become tired.

Some useful forms:

• κουράζομαι = I get tired / I am getting tired
• κουράστηκα = I got tired
• έχω κουραστεί = I have gotten tired / I’m tired

So in your sentence:

• έχεις κουραστεί = you have gotten tired

This verb is very commonly used in Greek in the middle/passive form, even though the meaning is active in English.

Both can often translate as you are tired, but there is a nuance.

• έχεις κουραστεί = you’ve gotten tired, focusing on the process/result of becoming tired
• είσαι κουρασμένος = you are tired, describing your state more directly

So:

• Προφανώς έχεις κουραστεί πολύ suggests you must have become very tired from what you’ve been doing
• Προφανώς είσαι πολύ κουρασμένος would sound a bit more like a direct description: you’re obviously very tired

In many everyday situations, both are natural.

Πολύ means very here, and it modifies the idea of being tired:

• έχεις κουραστεί πολύ = you have gotten very tired

This is the normal word order in Greek.
You will often see πολύ after the verb phrase:

• κουράστηκα πολύ = I got very tired
• δούλεψα πολύ = I worked a lot
• πεινάω πολύ = I’m very hungry / I’m really hungry

So this placement is completely natural.

Here αφού means since, as, or given that.

So:

• αφού δουλεύεις από το πρωί = since you’ve been working since the morning

In this sentence, αφού introduces the reason/explanation for the speaker’s conclusion.

Important: αφού can have different meanings in Greek depending on context.
Here it is causal: since / because.

Yes. That is a very common learner question, because αφού can indeed mean after, but not in this sentence.

Compare:

• Αφού έφαγα, έφυγα. = After I ate, I left.
• Αφού δουλεύεις από το πρωί, έχεις κουραστεί πολύ. = Since you’ve been working since morning, you’ve gotten very tired.

So the meaning of αφού depends on context:

• temporal = after
• causal = since / as / given that

In your sentence, it is clearly causal.

Greek often uses the present tense where English uses the present perfect continuous.

So:

• δουλεύεις από το πρωί literally = you work from the morning
• natural English = you’ve been working since this morning

This is very normal in Greek.
With από + a starting point in time, the present tense can describe an action that started earlier and continues now.

Other examples:

• Μένω εδώ από το 2020. = I’ve been living here since 2020.
• Σε περιμένω από τις πέντε. = I’ve been waiting for you since five.

Από το πρωί means since the morning or more naturally since this morning.

It is made of:

• από = from / since
• το πρωί = the morning

In time expressions, από often means since, especially when the action continues up to now.

So:

• δουλεύεις από το πρωί = you’ve been working since this morning

Greek very often uses the definite article in time expressions where English would not.

So το πρωί is the normal way to say:

• in the morning
• this morning
• the morning, depending on context

Examples:

• το πρωί = in the morning / this morning
• το βράδυ = in the evening / tonight
• το καλοκαίρι = in the summer

So από το πρωί is the normal expression.
Από πρωί can exist in some contexts or styles, but από το πρωί is the standard, neutral phrasing here.

The comma separates the main clause from the subordinate clause:

• Προφανώς έχεις κουραστεί πολύ,
• αφού δουλεύεις από το πρωί.

In Greek, when a clause introduced by αφού gives a reason or explanation, it is very common to separate it with a comma.

So the punctuation here is standard and natural.

Yes, absolutely. Greek allows that.

For example:

• Αφού δουλεύεις από το πρωί, προφανώς έχεις κουραστεί πολύ.

This means the same thing:
Since you’ve been working since this morning, you’ve obviously gotten very tired.

The original version starts with the conclusion first, then gives the reason.
The reversed version gives the reason first, then the conclusion.

Both are correct.

It is addressing one person.

That is because:

• έχεις = you have (singular)
• δουλεύεις = you work / you are working (singular)

If you were speaking to more than one person, you would say:

• έχετε κουραστεί πολύ
• δουλεύετε από το πρωί

So the original sentence is clearly second person singular.

Yes, in many cases you could say:

• Προφανώς έχεις κουραστεί πολύ, επειδή δουλεύεις από το πρωί.

But there is a slight difference in feel.

• επειδή = because
• αφού = since / as / given that

In this sentence, αφού sounds especially natural because the speaker is drawing an obvious conclusion from something already accepted as true.

So αφού works very well here.
Επειδή is possible, but it may sound a bit more straightforwardly causal and a little less like well, given that...

A very natural English rendering would be:

• Obviously, you’re very tired, since you’ve been working since this morning.

Other natural versions:

• You’re obviously very tired, since you’ve been working all morning.
• Obviously, you must be very tired—you’ve been working since this morning.

This is useful to know because Greek and English do not always match word for word, especially with:

• έχεις κουραστεί → often just you’re tired
• δουλεύεις από το πρωί → you’ve been working since this morning