Ο παππούς μου κοιμήθηκε στην πολυθρόνα, ενώ έβλεπε τις ειδήσεις.

Ο παππούς μου means my grandfather.

• ο = the for a masculine singular noun
• παππούς = grandfather
• μου = my

Greek usually uses the definite article with family words, so ο παππούς μου is the normal way to say my grandfather.

Literally, it is closer to the grandfather of me, but in natural English we just say my grandfather.

In Greek, possessive weak forms like μου normally come after the noun:

• ο παππούς μου = my grandfather
• το σπίτι μου = my house
• η αδερφή μου = my sister

So this is just the normal Greek pattern. English puts my before the noun, but Greek usually puts μου after it.

ο is the masculine singular definite article, meaning the.

Greek articles change for:

• gender
• number
• case

Here:

• ο = masculine, singular, nominative

It matches παππούς, which is the subject of the sentence.

κοιμήθηκε is the aorist form of κοιμάμαι.

In this sentence it means fell asleep or went to sleep, not just was sleeping.

That is important because the sentence describes a completed event:

• he fell asleep
• while he was watching the news

So Greek uses:

• κοιμήθηκε = a completed event
• έβλεπε = an ongoing background action

This is a very common tense combination in Greek.

Because κοιμόταν and κοιμήθηκε do not mean the same thing.

• κοιμόταν = he was sleeping
• κοιμήθηκε = he fell asleep / went to sleep

In this sentence, the point is that the grandfather fell asleep during another action. So κοιμήθηκε is the correct choice.

If you said κοιμόταν, the sentence would describe him as already being asleep.

έβλεπε is the imperfect of βλέπω.

The imperfect is used for:

• ongoing actions in the past
• repeated actions in the past
• background description

Here it means he was watching the news. That action was already in progress when the other event happened.

So the pattern is:

• έβλεπε = ongoing background action
• κοιμήθηκε = main event that happened during it

This is very similar to English He fell asleep while he was watching the news.

They show two different kinds of past action:

• κοιμήθηκε = a single completed event
• έβλεπε = an ongoing action in the background

So the sentence structure is:

• He fell asleep
• while he was watching the news

This contrast between aorist and imperfect is one of the most important things to notice in Greek past narration.

Here ενώ means while.

It connects two actions happening in the same general time frame:

• κοιμήθηκε στην πολυθρόνα
• ενώ έβλεπε τις ειδήσεις

So it introduces the background action during which the main event happened.

In other contexts, ενώ can also mean something closer to whereas, depending on the sentence, but here it clearly means while.

Greek often leaves out subject pronouns when they are clear from the verb ending.

So:

• κοιμήθηκε already tells you he/she fell asleep
• έβλεπε already tells you he/she was watching

Since the subject is already understood from ο παππούς μου, Greek does not need to repeat he.

This is very normal in Greek.

στην is the contracted form of:

• σε = in / at / to
• την = the feminine accusative singular

So:

• σε την πολυθρόνα becomes στην πολυθρόνα

This contraction is standard and extremely common in everyday Greek.

πολυθρόνα is a feminine noun meaning armchair.

After σε or στη(ν), Greek uses the accusative case for location in modern Greek.

So:

• nominative: η πολυθρόνα
• accusative: την πολυθρόνα
• with σε: στην πολυθρόνα

Even though English says in the armchair, Greek uses this preposition + accusative structure.

ειδήσεις means news and is plural in Greek.

Here it is the object of έβλεπε, so it must be in the accusative plural:

• nominative: οι ειδήσεις
• accusative: τις ειδήσεις

So:

• έβλεπε τις ειδήσεις = he was watching the news

Even though English news looks singular, Greek commonly uses the plural form ειδήσεις.

The comma separates the main clause from the subordinate clause:

• Ο παππούς μου κοιμήθηκε στην πολυθρόνα
• ενώ έβλεπε τις ειδήσεις

Greek punctuation often uses a comma before clauses introduced by words like ενώ, especially when the sentence has two clearly separated parts.

So the comma is natural and helps readability.

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

The given order is natural and neutral:

• Ο παππούς μου κοιμήθηκε στην πολυθρόνα, ενώ έβλεπε τις ειδήσεις.

But other orders are possible for emphasis, for example:

• Ο παππούς μου στην πολυθρόνα κοιμήθηκε, ενώ έβλεπε τις ειδήσεις.
• Ενώ έβλεπε τις ειδήσεις, ο παππούς μου κοιμήθηκε στην πολυθρόνα.

These may sound more marked or stylistically different, but they are possible.

Not exactly in this kind of sentence.

Although it comes from the verb κοιμάμαι, the aorist κοιμήθηκε often means:

• fell asleep
• went to sleep

That is why the sentence sounds natural as My grandfather fell asleep in the armchair while he was watching the news, not simply slept.

The main dictionary forms are:

• ο παππούς = grandfather
• μου = my
• κοιμάμαι = sleep
• η πολυθρόνα = armchair
• ενώ = while
• βλέπω = see / watch
• η είδηση = news item
• οι ειδήσεις = the news

This is useful because some words appear in changed forms in the sentence:

• κοιμήθηκε comes from κοιμάμαι
• έβλεπε comes from βλέπω
• τις ειδήσεις comes from οι ειδήσεις

In this sentence, no. Here it means he was watching the news.

The verb βλέπω can mean:

• see
• watch

The context tells you which one is meant. Since the object is the news, the natural English translation is was watching the news.