Ο φίλος μου κρεμάει και την τσάντα του στην ίδια κρεμάστρα, αλλά εγώ την αφήνω στην καρέκλα.

Μου here means my.

Greek often expresses possession by using the genitive form of a personal pronoun after the noun:

• ο φίλος μου = my friend
• η αδερφή μου = my sister
• το σπίτι μου = my house

So instead of having a separate word exactly like English my, Greek commonly uses forms like μου, σου, του, της, μας, σας, τους after the noun.

The article ο is still used, so Greek says literally something like the friend of me, but in natural English that becomes my friend.

Because την τσάντα is the direct object of the verb κρεμάει.

The base form is:

• η τσάντα = the bag (nominative, used for the subject)

But after a verb, when the noun is the thing being acted on, Greek usually uses the accusative:

• την τσάντα = the bag (accusative, direct object)

So:

• η τσάντα είναι στην καρέκλα = the bag is on the chair
• κρεμάει την τσάντα = he hangs the bag

The του means his, so την τσάντα του = his bag.

Yes. Κρεμάει means he/she hangs or is hanging.

It comes from the verb κρεμάω / κρεμώ, meaning to hang.

In everyday Greek, you may see both:

• κρεμάει
• κρεμά

Both are common ways to write/say the 3rd person singular present form.

So:

• Ο φίλος μου κρεμάει την τσάντα του = My friend hangs his bag
• Ο φίλος μου κρεμά την τσάντα του = same meaning

Here και means also / too.

In this sentence:

• Ο φίλος μου κρεμάει και την τσάντα του...

the idea is that your friend hangs his bag too, not just something else.

Greek και can mean:

• and
• also / too / even, depending on context

Here it adds the sense of also.

So the phrase suggests something like:

• My friend hangs his bag on the same hanger too...

There are two useful things here:

1. στην
   This is a contraction of σε + την.

• σε = in / on / at / to
• την = the (feminine accusative)

So:

• σε την becomes στην

2. ίδια κρεμάστρα
   ίδια means same here, and it agrees with κρεμάστρα, which is feminine singular.

So:

• στην ίδια κρεμάστρα = on the same hanger

Greek adjectives usually agree with the noun in gender, number, and case, so because κρεμάστρα is feminine singular accusative after στην, the adjective appears as ίδια.

Κρεμάστρα most often means hanger or coat hanger, but depending on context it can also refer to a place for hanging things, such as a hook or hanging rack.

In this sentence, the natural translation is probably hanger because of the bag being hung there.

So στην ίδια κρεμάστρα most likely means:

• on the same hanger

But in other contexts, it could be something closer to:

• on the same hook
• in the same hanging place

That’s right: Greek often drops subject pronouns because the verb ending already shows who is doing the action.

So Greek could often omit εγώ.

But here εγώ is included for contrast/emphasis:

• αλλά εγώ... = but I...

The sentence contrasts two people:

• My friend does one thing
• I do something different

So εγώ is not required for basic grammar, but it is very natural here because it highlights the contrast.

That την is a direct object pronoun meaning it.

It refers back to την τσάντα (the bag), which is feminine singular.

So:

• την αφήνω = I leave it

Greek object pronouns change according to gender and number:

• τον = him / it (masculine object)
• την = her / it (feminine object)
• το = it (neuter object)

Because τσάντα is feminine, Greek uses την.

In Greek, unstressed object pronouns normally come before the verb.

So Greek says:

• την αφήνω = literally it I-leave

This is normal Greek word order for clitic object pronouns.

Compare:

• Βλέπω την τσάντα = I see the bag
• Τη βλέπω = I see it

So the placement before the verb is not strange in Greek; it is the usual pattern.

Again, στην is σε + την.

• καρέκλα = chair
• στην καρέκλα = on the chair or in the chair, depending on context

In this sentence, the natural meaning is:

• I leave it on the chair

As in the earlier phrase, the noun after σε / στην is commonly in the accusative in modern Greek.

In this sentence, yes, the natural reading is that του refers to ο φίλος μου.

So:

• Ο φίλος μου κρεμάει ... την τσάντα του = My friend hangs ... his bag

That is the most straightforward interpretation because του usually refers to the nearest logical possessor, and here that is the friend.

Greek can sometimes be ambiguous with possessives like του / της, but context usually makes it clear.

Yes. Greek word order is often more flexible than English word order, because case endings and verb forms carry a lot of grammatical information.

The sentence as given is natural:

• Ο φίλος μου κρεμάει και την τσάντα του στην ίδια κρεμάστρα, αλλά εγώ την αφήνω στην καρέκλα.

But other orders are possible for emphasis, for example:

• Την τσάντα του την κρεμάει κιόλας στην ίδια κρεμάστρα...
• Αλλά την αφήνω εγώ στην καρέκλα.

These would shift emphasis, not the basic meaning.

So the given word order is a normal, natural version, but not the only possible one.