Το ασφάλιστρο πληρώνεται κάθε μήνα.

Το is the definite article meaning the.

In this sentence, ασφάλιστρο is a neuter singular noun, so it takes the neuter singular article το.

• το ασφάλιστρο = the premium

Greek articles change for gender, number, and case, so you cannot use just one form like English the.

Ασφάλιστρο means insurance premium: the amount of money paid regularly for insurance.

It is different from:

• ασφάλεια = insurance / safety / security (depending on context)
• ασφάλιστρο = premium, the payment itself

So in this sentence, the subject is not the insurance policy in general, but the premium payment.

Because πληρώνεται is the passive/middle form of the verb πληρώνω (to pay).

Compare:

• πληρώνει = he/she/it pays (active)
• πληρώνεται = he/she/it is paid (passive)

So:

• Το ασφάλιστρο πληρώνει... would be wrong for this meaning
• Το ασφάλιστρο πληρώνεται... = The premium is paid...

This is a very common Greek pattern: the ending -εται often marks a present tense passive/middle form in the 3rd person singular.

It is singular because the subject, το ασφάλιστρο, is singular.

Greek verbs agree with their subject in person and number.

• το ασφάλιστρο = singular
• therefore πληρώνεται = singular

If the subject were plural, the verb would also be plural:

• Τα ασφάλιστρα πληρώνονται κάθε μήνα.
• The premiums are paid every month.

Κάθε μήνα means every month and tells you how often something happens.

• κάθε = every
• μήνα = month in the accusative singular

This is a very common Greek time expression. After κάθε, Greek often uses the noun in the accusative:

• κάθε μέρα = every day
• κάθε εβδομάδα = every week
• κάθε χρόνο = every year
• κάθε μήνα = every month

So here it functions like an adverbial expression of frequency.

Because after κάθε, Greek uses the accusative case for this kind of time expression.

• μήνας = nominative singular
• μήνα = accusative singular

So:

• ο μήνας = the month
• κάθε μήνα = every month

This is something English speakers often notice because English does not show this kind of case change clearly.

Yes. Το ασφάλιστρο πληρώνεται κάθε μήνα is a very natural, neutral word order.

A simple way to think of it is:

• subject: το ασφάλιστρο
• verb: πληρώνεται
• time expression: κάθε μήνα

Greek word order is more flexible than English, so you may also see variations for emphasis, such as:

• Κάθε μήνα πληρώνεται το ασφάλιστρο.

This still means the same thing, but it emphasizes every month a little more.

Yes. Greek often uses passive structures very naturally in situations like this.

So Greek can say:

• Το ασφάλιστρο πληρώνεται κάθε μήνα.
  = The premium is paid every month.

But depending on context, Greek could also use an active structure, for example:

• Πληρώνεις το ασφάλιστρο κάθε μήνα.
  = You pay the premium every month.

The passive version is especially common in formal, informational, or business-style language.

A helpful approximation is:

• ασφάλιστρο → as-FA-li-stro
• πληρώνεται → pli-RO-ne-te

The stressed syllables are marked by the written accent:

• ασφάλιστρο
• πληρώνεται
• μήνα

Pay attention to pl at the beginning of πληρώνεται. English speakers may want to insert an extra vowel, but in Greek it starts directly with pl-.

In a normal sentence, that would sound unnatural.

Greek uses the article much more often than English, so το ασφάλιστρο is the expected form here.

Without the article, ασφάλιστρο might sound like a heading, note, label, or very telegraphic style rather than a normal full sentence.

So for ordinary usage, keep:

• Το ασφάλιστρο πληρώνεται κάθε μήνα.

It can often be understood in a general or contextual way.

Greek frequently uses the definite article where English might also use a generic expression. So το ασφάλιστρο can mean:

• the premium for a specific policy already being discussed, or
• the premium as the relevant payment in a general informational context

For example, in an insurance document, this sentence could simply mean:

• The premium is paid every month

So the article does not always mean a narrowly specific the in the way English learners sometimes expect.