Πριν αρχίσουμε να κουβεντιάζουμε, θέλω να σου δείξω μια φωτογραφία που βρήκα προχτές.

Greek often leaves out subject pronouns because the verb ending already shows who the subject is.

• αρχίσουμε = we start
• θέλω = I want
• βρήκα = I found

So Greek does not need εμείς or εγώ unless the speaker wants extra emphasis or contrast.

After πριν meaning before, Greek normally uses a subjunctive form for an action that has not yet happened at that point.

So:

• πριν αρχίσουμε = before we start

Here αρχίσουμε is the aorist subjunctive of αρχίζω. The aorist here does not mean past time. It shows the action as a single whole event: the moment of starting.

If you used αρχίζουμε, that would be present indicative and would not be the normal structure here.

This is very common in Modern Greek. After temporal πριν meaning before, the following verb is usually subjunctive in meaning, but να is often left out.

So Greek commonly says:

• πριν φύγω
• πριν αρχίσουμε
• πριν μιλήσεις

not usually πριν να φύγω in neutral everyday standard Greek.

So in Πριν αρχίσουμε, the verb is still functioning like a subjunctive, even though να is not written.

Modern Greek does not normally use an infinitive like English to chat or to show. Instead, it uses να + finite verb.

So:

• θέλω να σου δείξω = I want to show you
• αρχίζουμε να κουβεντιάζουμε = we start chatting

Grammatically, να is a subjunctive particle, not exactly the same thing as English to. But in many translations, English to is the most natural equivalent.

This is about aspect, which is very important in Greek.

After αρχίζω meaning start, Greek usually prefers the imperfective form for the action that begins:

• αρχίζω να κουβεντιάζω / κουβεντιάζουμε

That is because chatting is seen as an ongoing activity. The sentence focuses on beginning the process of chatting, not on completing one whole conversation.

So:

• να κουβεντιάζουμε = ongoing activity, more natural here
• να κουβεντιάσουμε = more like one complete conversation/event

Both can be translated as we talk, but they are not always identical.

• μιλάμε is the more general verb: we speak / we talk
• κουβεντιάζουμε suggests chatting, having a conversation, or discussing something

In this sentence, κουβεντιάζουμε gives a slightly more conversational, informal feeling, like before we start chatting.

Again, this is an aspect choice.

• δείξω is aorist subjunctive
• δείχνω would be present/imperfective

Here the speaker wants to perform one complete action: show you a photo. That is a single, bounded event, so δείξω is the natural choice.

• θέλω να σου δείξω = I want to show you
• θέλω να σου δείχνω = would sound more like I want to keep showing you / be showing you repeatedly

So δείξω is correct because the action is one-time and complete.

σου is the weak form of you in the genitive case, and here it means to you.

So:

• σου δείξω = show you / show to you

Greek uses these weak object pronouns before the verb in normal word order:

• σου λέω = I tell you
• σου δίνω = I give you
• σου δείχνω = I show you

In English, to is often omitted in translation, but in Greek the indirect object is still there grammatically.

Yes. μια φωτογραφία is the direct object of δείξω, so it is in the accusative.

The useful thing to know is that many feminine nouns look the same in the nominative and accusative singular.

So:

• nominative: μια φωτογραφία
• accusative: μια φωτογραφία

The form does not change here, even though the case changes.

Also, μια is the feminine form of the indefinite article a/an.

Both spellings exist.

• μια is very common in everyday writing
• μία may be used in more careful or formal spelling, or when someone wants to emphasize one

In normal modern usage, μια φωτογραφία is completely standard.

Here που means that or which, not where.

So:

• μια φωτογραφία που βρήκα = a photo that I found

This που introduces a relative clause. It does not change for gender, number, or case in this kind of everyday use.

Greek που is very common for that/which/who in relative clauses:

• ο άνθρωπος που είδα = the person that I saw
• το βιβλίο που αγόρασα = the book that I bought

So in this sentence, που links photo with I found.

Because the speaker is referring to a completed past action: I found.

• βρίσκω = I find / I am finding
• βρήκα = I found

βρήκα is the aorist past of βρίσκω. This is a very common verb with an irregular-looking aorist stem, so it is worth memorizing:

• βρίσκω → βρήκα

The sentence means that the finding happened earlier, and the photo is the result of that completed action.

For the same reason there is no I earlier in the sentence: Greek usually drops subject pronouns when the verb ending already makes the subject clear.

• βρήκα already means I found

So που βρήκα naturally means that I found. You would only add εγώ for emphasis, contrast, or correction.

προχτές means the day before yesterday.

It is a very common everyday word. You may also see the spelling προχθές, which is a bit more formal or careful.

So:

• βρήκα προχτές = I found [it] the day before yesterday

In speech, προχτές is extremely normal and natural.