Η συναλλαγή έγινε σήμερα.

Έγινε is the aorist (simple past) of γίνομαι.

The verb γίνομαι can mean things like:

• to become
• to happen
• to take place
• to be done / to be completed in some contexts

In Η συναλλαγή έγινε σήμερα, it means something like:

• The transaction took place today
• The transaction happened today
• The transaction was completed today

So although the basic verb is often taught as to become, in real Greek it is very commonly used for events that happen or are carried out.

Η is the definite article meaning the.

It matches συναλλαγή because συναλλαγή is:

• feminine
• singular
• nominative (the subject of the sentence)

So:

• η συναλλαγή = the transaction

Greek articles change according to gender, number, and case, unlike English the, which always stays the same.

In Greek, every noun has a grammatical gender: masculine, feminine, or neuter.

Συναλλαγή happens to be a feminine noun. That is a grammatical category, not a statement about real-world sex or gender.

Because it is feminine, it takes feminine forms such as:

• η συναλλαγή = the transaction
• της συναλλαγής = of the transaction

A lot of Greek nouns ending in -ή are feminine, so this is a common pattern.

The ending -ή is a common ending for feminine singular nouns in the nominative form.

So συναλλαγή is the dictionary form of the noun.

Also, the accent mark on ή shows where the stress goes:

• συναλλαγή

That means the last syllable is stressed.

Not exactly. It may feel passive in English because we might say was completed or was made, but grammatically έγινε is not a normal passive form here.

It is the aorist of γίνομαι, which is its own verb. It often expresses that something happened or came about.

So Greek is not literally saying:

• The transaction was done today with a passive of κάνω

Instead, it is saying more naturally:

• The transaction happened / took place / went through today

This is a very common Greek way of expressing completed events.

Because κάνω usually means to do or to make, and it normally needs someone actively doing something.

For example:

• Κάνω μια συναλλαγή = I make/do a transaction

But in your sentence, the focus is not on who did it. The focus is on the event itself. That is why Greek naturally uses γίνομαι:

• Η συναλλαγή έγινε σήμερα = The transaction took place today

So γίνομαι is often preferred when the idea is that an event occurred.

Σήμερα means today, and it is an adverb of time.

That means it tells you when the action happened.

Important points:

• it does not take an article here
• it does not change form for case, gender, or number
• it is placed very naturally at the end of the sentence

So:

• Η συναλλαγή έγινε σήμερα = The transaction happened today

No. Greek word order is more flexible than English word order.

Η συναλλαγή έγινε σήμερα is a very neutral, natural order:

• subject
• verb
• time expression

But Greek could also say:

• Σήμερα έγινε η συναλλαγή.
• Έγινε σήμερα η συναλλαγή.

These all mean roughly the same thing, but the emphasis changes a little.

For example:

• Σήμερα έγινε η συναλλαγή puts more focus on today
• Η συναλλαγή έγινε σήμερα sounds like a straightforward statement

A simple pronunciation guide would be:

ee syn-all-ah-YEE EH-yee-neh SEE-meh-rah

More carefully:

• Η = ee
• συναλλαγή = see-nah-lah-YEE or sin-a-la-YEE depending on how narrowly you want to represent it
• έγινε = EH-yee-neh
• σήμερα = SEE-meh-rah

A few useful pronunciation notes:

• γ before ι sounds like a soft sound, somewhat like y in this word
• the accent marks show the stressed syllables:
  • συναλλαγή
  • έγινε
  • σήμερα

Because Greek does not need to mention an agent when the important point is simply that the event happened.

This sentence is about the transaction itself, not about who performed it.

So:

• Η συναλλαγή έγινε σήμερα = the event occurred today

If you wanted to mention the person or institution involved, Greek could add that information, but it is not necessary here.

Yes. That is one reason learners often find γίνομαι tricky.

Examples:

• Έγινε γιατρός. = He became a doctor.
• Τι έγινε; = What happened?
• Η συνάντηση έγινε χθες. = The meeting took place yesterday.

So the exact English translation depends on context. In your sentence, became would not make sense, so happened / took place / was completed is the right idea.