Η παρτίδα αρχίζει τώρα.

A natural pronunciation is:

ee par-TEE-tha ar-KHEE-zee TO-ra

A more careful breakdown:

• Η = ee
• παρτίδα = par-TEE-tha
• αρχίζει = ar-KHEE-zee
• τώρα = TO-ra

A few sound notes:

• θ sounds like th in think
• χ here sounds like the ch in German Bach or Scottish loch
• The accented syllable is the stressed one:
  • παρτίδα
  • αρχίζει
  • τώρα

Η is the feminine singular definite article, meaning the.

So:

• Η παρτίδα = the game / the match / the round / the hand

Greek articles change depending on gender, number, and case, unlike English the, which never changes.

Here, η is used because παρτίδα is:

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

Παρτίδα often means:

• game
• match
• round
• hand (for cards, depending on context)

It can also mean batch or lot in other contexts, so the exact meaning depends on what is being talked about.

In this sentence, it most naturally means something like:

• the game
• the match
• the round

So if the English meaning shown to the learner is something like The game starts now, that fits very well.

No. This is just grammatical gender.

In Greek, nouns belong to categories such as:

• masculine
• feminine
• neuter

That does not usually mean the thing itself is male or female. It just affects the form of:

• the article
• adjectives
• sometimes pronouns

So παρτίδα is grammatically feminine, which is why it takes η.

Αρχίζει is the 3rd person singular present form of the verb αρχίζω, meaning to begin / to start.

So:

• αρχίζω = I begin / I start
• αρχίζει = he/she/it begins, or more naturally here, it begins

Because the subject is η παρτίδα, the verb must be 3rd person singular.

It can mean either, depending on context.

Greek present tense often covers both:

• simple present: begins / starts
• present progressive: is beginning / is starting

So Η παρτίδα αρχίζει τώρα could be understood as:

• The game begins now
• The game is starting now

English usually chooses one form more strictly than Greek does.

Greek often does not need subject pronouns the way English does.

In English, you must say:

• It begins now

In Greek, the verb ending already shows the person and number, and here the subject is stated explicitly anyway:

• Η παρτίδα = the subject
• αρχίζει = begins

So Greek does not need a separate word for it.

Yes, Greek word order is more flexible than English word order.

This sentence has a very normal order:

• Η παρτίδα αρχίζει τώρα.
• The game begins now.

But you could also hear:

• Τώρα αρχίζει η παρτίδα.
• Η παρτίδα τώρα αρχίζει.

These alternatives can shift the emphasis a little:

• Τώρα αρχίζει η παρτίδα puts extra focus on now
• Η παρτίδα αρχίζει τώρα sounds neutral and straightforward

So the end position of τώρα is natural, but not the only possibility.

Usually, yes: τώρα means now.

Depending on context, it can also have slightly broader senses like:

• right now
• at this moment
• from now on (in some situations)

In this sentence, it simply marks the starting time:

• The game starts now

Because Greek and English use different alphabets.

The Greek capital letter Η is called eta, and in Modern Greek it is pronounced ee.

So even though it looks like English H, it is not the same sound.

Here:

• Η = the (feminine singular article)
• pronunciation: ee

This is a very common beginner confusion.

The dictionary forms are:

• η = the (feminine singular article)
• παρτίδα = game / match / round / batch
• αρχίζω = to begin / to start
• τώρα = now

Notice that verbs are normally listed in the 1st person singular form in Greek dictionaries, so you look up αρχίζει under αρχίζω.

Yes. Depending on context, several alternatives are possible.

For example:

• Το παιχνίδι αρχίζει τώρα. = The game starts now.
• Η παρτίδα ξεκινά τώρα. = The game/match starts now.

A rough difference:

• παιχνίδι is a more general word for game
• παρτίδα is often used for a particular game / round / hand / match
• αρχίζει and ξεκινά can both mean starts/begins, though their usage can differ slightly by context and style

So the given sentence is perfectly natural, but not the only way to express the idea.