Έχοντας αγοράσει ψωμί από το αρτοποιείο, χαιρέτησα τη ζαχαροπλάστρια και πήγα κατευθείαν στο γραφείο.

It is a participial construction meaning having bought.

So:

• έχοντας = having
• αγοράσει = bought

Together, Έχοντας αγοράσει ψωμί... means Having bought bread...

This structure is common in Modern Greek when you want to show that one action happened before the main action, especially in a more written or narrative style.

Because Greek is using a structure similar to English having done rather than a full finite verb like I bought.

Compare:

• Έχοντας αγοράσει ψωμί, χαιρέτησα...
  = Having bought bread, I greeted...
• Αφού αγόρασα ψωμί, χαιρέτησα...
  = After I bought bread, I greeted...

Both are possible, but they are not structured the same way:

• αγόρασα is a normal past-tense verb: I bought
• αγοράσει here is used after έχοντας to form having bought

So this is not the main verb of the sentence; it is part of a subordinate idea.

Yes, normally yes.

In this sentence, the person who bought, greeted, and went is understood to be the same subject.

So the sentence naturally means:

• I, having bought bread, greeted the confectioner and went...

This is an important point. In Greek, this kind of participial phrase usually works best when the subject is the same as the subject of the main verb. If the subjects are different, the sentence can become confusing or unnatural.

Because Greek often omits the article with a noun when it means some of something or refers to the item in a general way.

So αγοράσει ψωμί means:

• bought bread
• effectively bought some bread

This is very natural in Greek, just as in English we often say buy bread, drink water, need money, without using the.

If you said το ψωμί, that would usually mean the bread, referring to specific bread already known in the context.

It is in the accusative, because the preposition από in Modern Greek normally takes the accusative.

Breakdown:

• από = from
• το αρτοποιείο = the bakery

So:

• από το αρτοποιείο = from the bakery

Also note that το is the neuter singular article, because αρτοποιείο is a neuter noun.

Both can relate to a bakery, but they are not always used in exactly the same way.

• αρτοποιείο is the more formal/literal word for bakery
• φούρνος literally means oven, but in everyday Greek it very often means bakery too

In daily speech, many Greeks would naturally say:

• Πήγα στον φούρνο = I went to the bakery

So αρτοποιείο is absolutely correct, but it can sound a bit more formal or precise than the everyday φούρνος.

Because ζαχαροπλάστρια is the direct object of χαιρέτησα.

• χαιρέτησα = I greeted
• whom did I greet? the confectioner / pastry shop woman

So Greek uses the accusative form of the article:

• nominative: η ζαχαροπλάστρια
• accusative: τη(ν) ζαχαροπλάστρια

That is why you see τη instead of η.

This is about the final -ν of the article.

The full accusative feminine singular article is την, but in Modern Greek the final -ν is often dropped before many consonants.

So both of these may appear in writing, depending on style and pronunciation rules:

• την ζαχαροπλάστρια
• τη ζαχαροπλάστρια

Before ζ, dropping the -ν is common and normal in Modern Greek orthography.

So τη ζαχαροπλάστρια is not a different article; it is just the usual shortened written form of την in this context.

It is the feminine form of a word related to making and selling sweets or pastries.

• ζαχαροπλάστης = a male confectioner / pastry maker
• ζαχαροπλάστρια = a female confectioner / pastry maker

Depending on context, English might translate it as:

• pastry chef
• pastry maker
• confectioner
• sometimes simply the woman in the pastry shop

The exact best translation depends on the situation, but grammatically the key point is that it is a feminine noun.

Because στο is the normal contracted form of:

• σε + το = στο

So:

• σε το γραφείο is not the usual form
• στο γραφείο is the correct natural form

This is very common in Greek:

• στο = to/in the for neuter singular
• στον = to/in the for masculine singular
• στη / στην = to/in the for feminine singular

Here, γραφείο is neuter, so στο γραφείο is exactly what you expect.

Because the preposition σε takes the accusative in Modern Greek.

So even though English says to the office or in the office, Greek uses:

• σε + accusative

Here:

• το γραφείο is the accusative form as well as the nominative form for this neuter noun

That is why the form looks the same. With many neuter nouns, nominative and accusative are identical.

κατευθείαν is an adverb meaning:

• straight
• directly
• right away, depending on context

In this sentence, it modifies πήγα:

• πήγα κατευθείαν στο γραφείο = I went straight/directly to the office

Its position is fairly flexible. For example, Greek could also say:

• πήγα στο γραφείο κατευθείαν

But πήγα κατευθείαν στο γραφείο is very natural and clear.

Because the sentence describes completed actions in sequence.

• χαιρέτησα = I greeted
• πήγα = I went

The Greek aorist is the normal tense for simple completed past events. Here the actions are presented as a chain:

1. having bought bread
2. I greeted the confectioner
3. I went straight to the office

So the aorist is exactly the natural tense choice.

Yes, Greek word order is more flexible than English, although some orders sound more natural than others.

The given sentence is perfectly natural, but alternatives are possible, for example:

• Έχοντας αγοράσει ψωμί από το αρτοποιείο, πήγα κατευθείαν στο γραφείο και χαιρέτησα τη ζαχαροπλάστρια.

That changes the order of events in the telling, though, so it may not match the intended sequence as neatly.

You could also move some adverbs or phrases for emphasis. Greek often uses word order to highlight what is important, but the original version is a very standard, smooth narrative sentence.

It is natural Greek, but Έχοντας αγοράσει... sounds a bit more written or narrative than everyday casual conversation.

In everyday speech, many speakers might prefer something like:

• Αφού αγόρασα ψωμί από το αρτοποιείο, χαιρέτησα τη ζαχαροπλάστρια και πήγα κατευθείαν στο γραφείο.

That version is a little more straightforward and conversational.

So the original sentence is not unnatural at all, but the opening participial structure gives it a slightly more polished or written feel.