Η λογίστρια μου είπε να κρατήσω όλες τις αποδείξεις, γιατί θέλει να ελέγξει τις πληρωμές του μήνα.

Η is the feminine singular definite article, meaning the.

• η λογίστρια = the accountant
• λογίστρια = accountant (without the)

Greek uses the definite article very often, more regularly than English. Since λογίστρια is a feminine noun, it takes the feminine article η in the nominative singular.

A learner may also notice that λογίστρια specifically means a female accountant. The masculine form is λογιστής.

Here μου means to me.

So:

• είπε = said / told
• μου είπε = told me

This is a very common Greek pattern: an unstressed object pronoun is used where English often uses to + pronoun.

Examples:

• Μου μίλησε. = He/She spoke to me.
• Μου έδωσε το βιβλίο. = He/She gave me the book.

In this sentence, μου is the weak genitive form of εγώ used as an indirect object.

Greek λέω / είπα can mean both say and tell, depending on the structure.

• Μου είπε... = She told me...
• Είπε ότι... = She said that...

Since the sentence includes μου (to me), English naturally translates it as told me rather than said to me, even though the Greek verb is the same verb family.

This is a very common Greek structure:

• είπε να + verb = told [someone] to + verb

So:

• μου είπε να κρατήσω = she told me to keep

The word να introduces the Greek subjunctive. After verbs like λέω, θέλω, μπορώ, πρέπει, Greek often uses να plus a verb form instead of an infinitive.

English says:

• to keep

Modern Greek usually says:

• να κρατήσω

Greek does not use an infinitive the way English does.

Κρατήσω is the form used after να here because it is the aorist subjunctive form of κρατώ / κρατάω.

In simple learner terms:

• κρατάω / κρατώ = I keep / I am keeping
• να κρατήσω = to keep in the sense of keep/store/save, viewed as a complete action

In this sentence, the accountant is telling the speaker to make sure they keep all the receipts. Greek often prefers the aorist subjunctive after να when talking about a single complete action or task.

Compare:

• να κρατήσω τις αποδείξεις = to keep the receipts
• να κρατάω αποδείξεις = more like to keep receipts regularly / habitually

So κρατήσω fits better here.

This phrase shows agreement in gender, number, and case.

Base noun:

• η απόδειξη = the receipt

Here it is accusative plural, because it is the direct object of κρατήσω:

• τις αποδείξεις = the receipts

The word όλες means all, and it must agree with αποδείξεις:

• feminine
• plural
• accusative

So:

• όλες τις αποδείξεις = all the receipts

Useful comparison:

• όλη η απόδειξη = the whole receipt
• όλες οι αποδείξεις = all the receipts (subject form)
• όλες τις αποδείξεις = all the receipts (object form)

Yes. Γιατί can mean both:

• why
• because

The meaning depends on the sentence.

Here it means because, since it introduces the reason:

• γιατί θέλει να ελέγξει... = because she wants to check...

Examples:

• Γιατί έφυγες; = Why did you leave?
• Έφυγα γιατί κουράστηκα. = I left because I got tired.

So learners need to rely on context.

After θέλω (I want), Greek normally uses να + subjunctive.

So:

• θέλει να ελέγξει = she wants to check

This is the standard pattern:

• θέλω να πάω = I want to go
• θέλω να δω = I want to see
• θέλω να ελέγξω / ελέγξει = I want to check / he-she wants to check

Here ελέγξει is the 3rd person singular aorist subjunctive form, matching θέλει:

• she wants to check

Again, English uses to check, but Greek uses να + verb.

They are both aorist subjunctive forms after να, but they belong to different verbs and different conjugation patterns.

• να κρατήσω = that I keep / for me to keep
• να ελέγξει = that he/she checks / for him/her to check

The endings differ because the subject differs:

• κρατήσω = 1st person singular (I)
• ελέγξει = 3rd person singular (he/she/it)

That matches the sentence:

• μου είπε να κρατήσω → she told me to keep
  The person keeping is I
• θέλει να ελέγξει → she wants to check
  The person checking is she

So the forms are different because the subjects are different.

Τις πληρωμές is in the accusative plural because it is the direct object of ελέγξει.

• οι πληρωμές = the payments as a subject
• τις πληρωμές = the payments as an object

Then του μήνα is in the genitive, meaning of the month.

So:

• τις πληρωμές του μήνα = the payments of the month / the month’s payments

Greek often uses the genitive where English might use:

• of
• a possessive
• an adjective-like noun phrase

Examples:

• το τέλος της μέρας = the end of the day
• οι λογαριασμοί του σπιτιού = the household bills / the bills of the house

Literally, του μήνα means of the month.

But in natural English, depending on context, it may be understood as:

• the month’s payments
• the payments for the month
• this month’s payments

Greek genitive phrases are often broader than one fixed English translation. The exact wording in English depends on context.

So yes, the literal structure is of the month, but the natural English rendering may vary.

Greek uses the definite article more frequently than English.

In this sentence you have:

• Η λογίστρια
• τις αποδείξεις
• τις πληρωμές
• του μήνα

This is normal Greek style. English often drops the where Greek keeps it, especially with specific nouns.

Greek articles also show important grammatical information:

• gender
• number
• case

So they are not just optional little words—they help signal how the sentence works.

Greek word order is more flexible than English, although not completely free.

The sentence as given is natural:

• Η λογίστρια μου είπε να κρατήσω όλες τις αποδείξεις, γιατί θέλει να ελέγξει τις πληρωμές του μήνα.

But other orders are possible for emphasis. For example:

• Μου είπε η λογίστρια να κρατήσω όλες τις αποδείξεις...
• Η λογίστρια μου είπε να κρατήσω τις αποδείξεις όλες... (less neutral, more marked)

The original version sounds like a normal, neutral statement. Greek often changes word order to highlight:

• who did something
• what is important
• contrast or emphasis

So yes, the order can change, but the given sentence is a standard and natural way to say it.

Yes. The sentence is built from a main statement plus two να clauses and one reason clause:

1. Η λογίστρια μου είπε...
   main clause

2. να κρατήσω όλες τις αποδείξεις
   what she told me to do

3. γιατί θέλει...
   reason clause

4. να ελέγξει τις πληρωμές του μήνα
   what she wants to do

This is a very common Greek pattern:

• X μου είπε να... γιατί θέλει να...

If you get comfortable with this structure, you will understand many everyday Greek sentences much more easily.