Η ομάδα διάλεξε νέο αρχηγό.

In Greek, ομάδα means team and it is a singular feminine noun. Like English team, it refers to a group, but grammatically it is treated as one unit.

So:

• Η ομάδα = the team
• the verb is also singular: διάλεξε = chose

Greek does the same with many collective nouns: the group may contain many people, but the grammar is singular.

διάλεξε is the 3rd person singular aorist active form of διαλέγω.

Here that means:

• διαλέγω = I choose / I am choosing
• διάλεξε = he/she/it chose

Since the subject is Η ομάδα, the verb is translated as the team chose.

The aorist usually expresses a completed action, so this sentence presents the choosing as a single whole event.

Because Greek is distinguishing between different aspects/tenses.

• διαλέγει = chooses / is choosing (present)
• διάλεξε = chose (aorist, completed past action)

So if the sentence is talking about a completed choice in the past, διάλεξε is the correct form.

Because νέο αρχηγό is the direct object of the verb, so it must be in the accusative case.

Here is the nominative form:

• νέος αρχηγός = a new leader / new leader as a subject

But after διάλεξε (chose), Greek needs the object in the accusative:

• νέο αρχηγό

Both words change:

• νέος → νέο
• αρχηγός → αρχηγό

So the sentence structure is:

• Η ομάδα = subject
• διάλεξε = verb
• νέο αρχηγό = direct object

Greek does not have an indefinite article like English a/an.

So Greek can simply say:

• νέο αρχηγό

and that can mean:

• a new leader
• new leader

The definite article exists:

• ο αρχηγός = the leader

But for an indefinite noun, Greek often uses no article at all.

Because νέο is an adjective and it agrees with αρχηγό in:

• gender
• number
• case

Here:

• αρχηγό is masculine singular accusative
• so the adjective must also be masculine singular accusative
• therefore: νέο

This agreement helps you see that the two words belong together as one noun phrase:

• νέο αρχηγό = new leader

Grammatically, αρχηγός is often treated as a noun of the masculine pattern, but it can refer to a male or female leader depending on context.

In this sentence, the form used is:

• nominative: ο αρχηγός
• accusative: τον αρχηγό

If the person is female, Greek may still use αρχηγός, especially in modern usage, though context will usually make the gender clear.

For this sentence, the important point for a learner is the case pattern:

• αρχηγός → αρχηγό in the accusative singular

Yes. Greek word order is more flexible than English because case endings show what each word is doing.

The neutral order here is:

• Η ομάδα διάλεξε νέο αρχηγό.

But Greek could also say:

• Νέο αρχηγό διάλεξε η ομάδα.

That might put more emphasis on νέο αρχηγό.

Even when the order changes, the endings still show:

• η ομάδα = subject
• νέο αρχηγό = object

Greek accents show which syllable is stressed.

• διάλεξε is stressed on the first syllable: DIA-le-kse
• ομάδα is stressed on the second syllable: o-MA-da
• αρχηγό is stressed on the last syllable: ar-khi-GO

Learning the accent is important because stress is a normal part of correct pronunciation in Greek.

A rough pronunciation is:

• Η ομάδα διάλεξε νέο αρχηγό
• ee o-MA-tha THIA-le-kse NE-o ar-khee-GHO

A few useful pronunciation notes:

• δ sounds like the th in this
• γ before ε or ι sounds like a soft sound somewhat like English y, but stronger
• χ sounds like a throaty sound, like the ch in German Bach or Scottish loch
• αι is pronounced like e
• ευ/αυ rules do not apply here, so nothing special there

Exact pronunciation varies a bit by speaker, but the stress pattern is very important.

The dictionary forms are:

• ομάδα = team
• διαλέγω = choose
• νέος = new
• αρχηγός = leader / chief / captain, depending on context

In the sentence, some words appear in changed forms because of grammar:

• διαλέγω → διάλεξε
• νέος → νέο
• αρχηγός → αρχηγό

Yes. The exact English word can depend on context.

• αρχηγός can mean leader, chief, head, or captain
• ομάδα often suggests team
• so in a sports context, new captain may be the most natural English rendering

Grammatically, though, the Greek structure stays the same regardless of which English word fits best in context.