Ελέγχουμε κατά πόσο το ποσοστό επιχορήγησης είναι υψηλό.

Ελέγχουμε is the 1st person plural present tense of ελέγχω, so it means we check, we examine, or we verify.

Breakdown:

• ελέγχω = I check
• ελέγχουμε = we check

The ending -ουμε is a very common ending for we in Modern Greek verbs.

In Greek, subject pronouns are often left out because the verb ending already shows who is doing the action.

So:

• Ελέγχουμε already means we check
• Εμείς ελέγχουμε would mean we check, but with extra emphasis on we

Greek does this much more often than English.

κατά πόσο is a fixed expression meaning something like:

• to what extent
• whether
• how far

It is often used in more formal or analytical language when examining if something is true or valid.

So in this sentence, Ελέγχουμε κατά πόσο... means something like:

• We check whether...
• We examine to what extent...

It sounds a bit more formal than a simple αν.

Yes, in many contexts you could say:

• Ελέγχουμε αν το ποσοστό επιχορήγησης είναι υψηλό.

That would also mean We check whether the subsidy rate is high.

The difference is mainly in tone:

• αν = more everyday, direct
• κατά πόσο = more formal, more analytical, often used in reports, administration, or academic writing

το ποσοστό means the percentage or the rate, and it is a neuter singular noun.

That is why it takes:

• the neuter singular article το

So:

• το ποσοστό = the percentage / the rate

In this sentence, it is the subject of είναι υψηλό.

επιχορήγησης is the genitive singular of η επιχορήγηση.

Forms:

• η επιχορήγηση = the subsidy / grant
• της επιχορήγησης = of the subsidy / subsidy's

In το ποσοστό επιχορήγησης, the genitive shows the relationship:

• literally: the percentage of subsidy
• more naturally: the subsidy rate or the rate of subsidy

Greek often uses the genitive where English uses of or sometimes a noun used like an adjective.

Yes, literally that is the structure.

More natural English equivalents might be:

• the subsidy rate
• the grant percentage
• the percentage of the subsidy

Greek very commonly builds noun phrases this way:

• το ποσοστό επιχορήγησης
• head noun first: το ποσοστό
• qualifying noun in the genitive: επιχορήγησης

Because υψηλό agrees with το ποσοστό, which is neuter singular.

Adjectives in Greek must agree with the noun they describe in:

• gender
• number
• case

So:

• υψηλός = masculine singular
• υψηλή = feminine singular
• υψηλό = neuter singular

Since ποσοστό is neuter singular, the adjective must also be υψηλό.

Because υψηλό is a predicate adjective, not an adjective directly inside the noun phrase.

Compare:

1. το υψηλό ποσοστό επιχορήγησης
   = the high subsidy rate
   Here the adjective is directly attached to the noun.

2. το ποσοστό επιχορήγησης είναι υψηλό
   = the subsidy rate is high
   Here the adjective comes after είναι and functions like high in English after is.

So no article is needed before υψηλό in this sentence.

είναι is the present tense form of είμαι (to be).

It means:

• is

So:

• το ποσοστό επιχορήγησης είναι υψηλό = the subsidy rate is high

Even though είναι can mean am / is / are, the subject tells you which one it is. Here the subject is singular, so in English we translate it as is.

Greek can do both, but the meaning is slightly different in structure:

• το υψηλό ποσοστό επιχορήγησης = the high subsidy rate
• το ποσοστό επιχορήγησης είναι υψηλό = the subsidy rate is high

The sentence you were given is making a full statement about the rate:

• first it names the thing
• then it says what property it has

This is exactly like the difference between:

• the high rate
• the rate is high

Not completely. Greek word order is more flexible than English, because endings show grammatical relationships more clearly.

The neutral, natural order here is:

• Ελέγχουμε κατά πόσο το ποσοστό επιχορήγησης είναι υψηλό.

But parts could move for emphasis, especially in more formal writing. Still, the given order is the most straightforward and natural for a standard statement.

Yes, it sounds fairly formal or administrative/technical, mainly because of:

• κατά πόσο
• ποσοστό επιχορήγησης

This is the kind of Greek you might see in:

• reports
• official documents
• policy texts
• business or funding contexts

In more everyday Greek, someone might choose simpler wording.

The sentence has two main parts:

1. Ελέγχουμε κατά πόσο...

   • We check whether / to what extent...

2. το ποσοστό επιχορήγησης είναι υψηλό

   • the subsidy rate is high

So the overall structure is:

• main verb: Ελέγχουμε
• subordinate clause introduced by κατά πόσο
• inside that clause:
  • subject: το ποσοστό επιχορήγησης
  • verb: είναι
  • predicate adjective: υψηλό

A good pattern to remember is:

[Verb in 1st person plural] + κατά πόσο / αν + [subject] + είναι + [adjective]

For example:

• Εξετάζουμε κατά πόσο το κόστος είναι αποδεκτό.
• Ελέγχουμε αν η τιμή είναι σωστή.

Also remember these key grammar points:

• Greek often omits subject pronouns
• the genitive is common in noun combinations like ποσοστό επιχορήγησης
• adjectives must agree with the noun
• predicate adjectives after είναι usually appear without an article