Κάθε Κυριακή γυαλίζω τον καθρέφτη του μπάνιου και μετά ανοίγω λίγο το παράθυρο.

Greek often leaves out subject pronouns because the verb ending already shows who is doing the action. In γυαλίζω and ανοίγω, the ending -ω tells you the subject is I.

You could say Εγώ γυαλίζω..., but that would usually sound more emphatic, like I polish it, not someone else.

Greek uses the present tense for habitual or repeated actions, just like English does in sentences such as Every Sunday I polish...

So here the present does not mean only right now. It means this is something the speaker regularly does.

After κάθε, Greek normally uses a singular noun:

• κάθε μέρα = every day
• κάθε εβδομάδα = every week
• κάθε Κυριακή = every Sunday

So Greek does not need a plural idea like Sundays here. The word κάθε already gives the meaning every/each.

Because the mirror is the direct object of γυαλίζω. In Greek, direct objects normally go in the accusative case.

So:

• ο καθρέφτης = the mirror, as subject
• τον καθρέφτη = the mirror, as object

English does not show this kind of change on nouns, but Greek does.

This is the usual pattern for many masculine nouns ending in -ης.

For this noun:

• nominative: ο καθρέφτης
• accusative: τον καθρέφτη

So the final -ς drops, and the article changes too. This is a very common pattern in Greek.

του μπάνιου is a genitive phrase. Greek often uses the genitive to show possession or a close relationship between two nouns.

So:

• ο καθρέφτης του μπάνιου
  literally = the mirror of the bathroom
  naturally = the bathroom mirror

This is a very common Greek way to express what English often does with noun + noun combinations.

Yes. μπάνιο can have a few related meanings depending on context, including bath, bathing, and bathroom.

In ο καθρέφτης του μπάνιου, it clearly means bathroom, because we are talking about a mirror belonging to that room.

γυαλίζω means polish, shine, or make shiny. It is a bit more specific than just clean.

So γυαλίζω τον καθρέφτη suggests not only removing dirt, but making the mirror nice and shiny. If you only wanted clean, a common verb would be καθαρίζω.

Here λίγο means a little or slightly. It modifies the action open, not the noun window.

So:

• ανοίγω λίγο το παράθυρο = I open the window a little

Its position is very natural in Greek. Word order is flexible, but this placement is common and clear.

Greek uses the definite article very often, more often than English does. Here το παράθυρο means a specific, identifiable window — probably the one relevant in that situation, such as the bathroom window.

In English, we also say the window in this sentence, so the Greek article matches that idea well.

και means and, and μετά means then or afterwards.

Together, και μετά links the two actions in sequence:

1. γυαλίζω τον καθρέφτη του μπάνιου
2. μετά ανοίγω λίγο το παράθυρο

So the sense is and then. It shows what happens next.