Θαυμάζω την αγάπη που δείχνει η γιαγιά μου σε όλη την οικογένεια.

It breaks down like this:

• Θαυμάζω = I admire
• την αγάπη = the love
• που δείχνει = that / which ... shows
• η γιαγιά μου = my grandmother
• σε όλη την οικογένεια = to the whole family

So the structure is:

I admire + the love + that my grandmother shows + to the whole family.

A very natural English rendering is:

I admire the love my grandmother shows to the whole family.

Because it is the direct object of Θαυμάζω.

The verb θαυμάζω means I admire, and the thing being admired goes in the accusative:

• Θαυμάζω την αγάπη. = I admire the love.

That is why both the article and noun are accusative feminine singular:

• η αγάπη = nominative, the love
• την αγάπη = accusative, the love as an object

Greek usually uses the definite article much more often than English.

Here, την αγάπη means the love, referring to a specific love: the love that the grandmother shows to the family.

In English, you might sometimes say:

• I admire her love for the family
• I admire the love my grandmother shows to the whole family

Greek strongly prefers the article here, so αγάπη by itself would sound different and less natural in this sentence.

Here που is a relative word meaning that, which, or sometimes who, depending on the context.

In this sentence:

• την αγάπη που δείχνει η γιαγιά μου...
• literally: the love that my grandmother shows...

So που introduces extra information about την αγάπη.

A useful thing to know: που does not change form for gender, number, or case. That makes it much simpler than English relative pronouns in some ways.

Because Greek word order is more flexible than English.

English strongly prefers:

• my grandmother shows

Greek can say:

• που δείχνει η γιαγιά μου
• or που η γιαγιά μου δείχνει

Both are possible, though the first one sounds very natural here.

The verb often comes before the subject in Greek, especially in relative clauses or when the sentence flows more naturally that way.

So:

• η γιαγιά μου is still the subject
• it is just placed after the verb

Because η γιαγιά μου is the subject of δείχνει.

Inside the relative clause:

• δείχνει = shows
• η γιαγιά μου = my grandmother → the one doing the action

Subjects are in the nominative, so Greek uses:

• η γιαγιά μου

If she were a direct object, then it would be accusative:

• βλέπω τη γιαγιά μου = I see my grandmother

So the sentence contains both:

• την αγάπη = object of Θαυμάζω
• η γιαγιά μου = subject of δείχνει

μου means my, but literally it is the weak genitive form of I / me.

Greek often expresses possession like this:

• η μητέρα μου = my mother
• ο φίλος μου = my friend
• η γιαγιά μου = my grandmother

So instead of using a separate possessive adjective like English my, Greek commonly uses these short pronoun forms after the noun.

Because σε usually takes the accusative, and όλη την οικογένεια is the accusative feminine singular form.

Break it down:

• σε = to
• όλη = whole / entire
• την οικογένεια = the family

So:

• σε όλη την οικογένεια = to the whole family

The adjective όλη agrees with οικογένεια in gender, number, and case:

• feminine
• singular
• accusative

Because όλη is an adjective and την is the article. Greek normally uses both.

So:

• την οικογένεια = the family
• όλη την οικογένεια = the whole family

This is very normal Greek adjective + article behavior.

Compare:

• η μεγάλη πόλη = the big city
• τον καλό φίλο = the good friend
• όλη την οικογένεια = the whole family

Here σε marks the person or group that receives the shown love:

• δείχνει ... σε όλη την οικογένεια = shows ... to the whole family

In this sentence, σε works a lot like English to.

With δείχνω, Greek can use different patterns depending on what exactly is being expressed, but δείχνω κάτι σε κάποιον is a very common structure:

• δείχνω αγάπη σε κάποιον = show love to someone
• δείχνω το βιβλίο σε κάποιον = show the book to someone

Yes, that is grammatically possible.

Greek allows more than one word order:

• την αγάπη που δείχνει η γιαγιά μου
• την αγάπη που η γιαγιά μου δείχνει

The version in your sentence sounds very natural and smooth. The second version is also understandable, but it may sound a little more marked depending on context.

So a learner should know that Greek word order is flexible, but not completely random. Native speakers choose the order that sounds most natural or gives the right emphasis.

Yes. The exact English translation depends on the noun it refers to.

Examples:

• ο άνθρωπος που μιλάει = the person who is speaking
• το βιβλίο που διαβάζω = the book that / which I am reading
• την αγάπη που δείχνει η γιαγιά μου = the love that my grandmother shows

So που is very flexible in translation, but in Greek it stays the same.

δείχνει is present tense, third person singular:

• δείχνω = I show
• δείχνει = he/she/it shows

It is present because the sentence describes a general or ongoing fact:

my grandmother shows love to the whole family

This is not necessarily happening only right now at this second. Like English present simple, Greek present can describe habits, character, and repeated behavior.

Yes — this is a very useful Greek pattern to notice. The article changes to show case, gender, and number.

In this sentence:

• την αγάπη → accusative feminine singular
• η γιαγιά μου → nominative feminine singular
• την οικογένεια → accusative feminine singular

So even though αγάπη, γιαγιά, and οικογένεια are all feminine singular nouns, the article changes depending on the noun’s role in the sentence.

That is one of the key things English speakers need to get used to in Greek.