Learn Hardcore Greek: Έχω πολύ νερό.

Έχω = I have (1st person singular of the verb “to have”)
πολύ = much/a lot of (quantifier agreeing with a neuter singular noun)
νερό = water (neuter, singular) Structure: Subject (implicit “I”) + verb + quantifier + mass noun.

Why is there no article (like το) before νερό?

Greek usually drops the article with mass nouns when speaking in a general/indefinite sense. πολύ νερό means “a lot of water” (not some specific water), so no article is needed. If you mean a specific water previously mentioned, you can use a partitive structure: Έχω πολύ από το νερό (που έφερες).

Why is it πολύ and not πολλή or πολλά?

The quantifier agrees with the noun’s gender and number.

νερό is neuter singular → use neuter singular: πολύ νερό (“much/a lot of water”).
If the noun were feminine singular: πολλή ζάχαρη (“much sugar”).
Masculine singular: πολύς χρόνος (“much time”).
For plural countable nouns: πολλοί/πολλές/πολλά (e.g., πολλά βιβλία = many books).

Is πολύ here an adjective or an adverb?

Here it functions as a quantifying adjective agreeing with the neuter singular noun (νερό). As an adverb, πολύ means “very/a lot” and modifies verbs/adjectives: δουλεύω πολύ (I work a lot), πολύ καλό (very good).

How do you pronounce Έχω πολύ νερό?

[ˈe.xo poˈli neˈro]

χ is a voiceless fricative (like German “Bach”): before back vowels, [ç] before front vowels. Here it’s in έχω.
Stress marks show the stressed syllable: É-cho po-LÝ ne-RÓ.

Does ω (omega) sound different from ο (omicron) in Modern Greek?

No. Both are pronounced /o/. The difference is historical/orthographic, not phonetic.

What case is νερό in, and why?

Accusative singular, because it’s the direct object of έχω. For neuter nouns, nominative and accusative singular look the same in form.

Can I change the word order, e.g., Πολύ νερό έχω?

Greek allows flexible word order, but Έχω πολύ νερό is the neutral/default. Πολύ νερό έχω front-loads the object for emphasis, like “A lot of water is what I have,” used in contrastive or corrective contexts.

How do I make it negative or turn it into a question?

Negative: Δεν έχω πολύ νερό. = I don’t have much water.
Stronger negative (“any at all”): Δεν έχω καθόλου νερό.
Question: Έχεις πολύ νερό; (Do you have a lot of water?) / Έχεις νερό; (Do you have water?)

How do I say “too much,” “a little,” or “enough” water?

Too much: πάρα πολύ νερό (also “υπερβολικά πολύ νερό,” more formal).
A little: λίγο νερό.
Enough: αρκετό νερό.
Plenty (colloquial): μπόλικο νερό.

Can I use the plural, like “many waters”?

The plural νερά exists but is specialized:

For bodies/types of water: τα νερά της λίμνης (the waters of the lake).
In cafés/shops, ένα νερό colloquially means “a (bottle of) water,” so δύο νερά = two waters (two bottles). For the general substance, stick with singular: πολύ νερό.

How do I say it with other subjects (we/you/they have a lot of water)?

Present tense of έχω:

I have: έχω πολύ νερό
You (sg) have: έχεις πολύ νερό
He/She/It has: έχει πολύ νερό
We have: έχουμε πολύ νερό
You (pl) have: έχετε πολύ νερό
They have: έχουν(ε) πολύ νερό

Is χ like the English “h”?

Not exactly. χ is a fricative:

Before back vowels (a, o, ou): , as in German “Bach”: έχω [ˈe.xo].
Before front vowels (e, i): [ç], like the “h” in German “ich.” English “h” [h] is different and weaker.

Can I add the definite article to refer to specific water?

Yes, with a partitive construction:

Έχω πολύ από το νερό (που έφερες). = I have a lot of the water (you brought). Simply saying Έχω πολύ το νερό is not idiomatic.

Do Greeks use έχω for age (like “I have 20 years”)?

No. Greek uses είμαι (to be) for age:

Είμαι 20 (χρονών). = I am 20 (years old).

Any common spelling or meaning traps here?

πολύ (a lot/very) vs πόλη (city): different words and stress.
Keep the accent marks: Έχω, πολύ, νερό—they guide both stress and sometimes meaning.
Don’t confuse πολύ (neuter singular “much”) with πολλή/πολλοί/πολλά (other gender/number forms).