Έχω τόση νύστα που δεν μπορώ να διαβάσω.

This is just the normal Greek way to express this idea.

• έχω νύστα = I’m sleepy / I feel sleepy
• Greek often uses έχω
  • noun for states that English may express differently.

So in this sentence, Έχω τόση νύστα means I’m so sleepy or more literally I have so much sleepiness.

You can also hear adjectives like νυσταγμένος / νυσταγμένη in some contexts, but έχω νύστα is extremely common and natural in everyday speech.

τόση means so much / such a lot of.

In this sentence, it intensifies νύστα:

• Έχω νύστα = I’m sleepy
• Έχω τόση νύστα = I’m so sleepy / I have so much sleepiness

It is the feminine singular form because it matches νύστα, which is a feminine singular noun.

Related forms are:

• τόσος for masculine nouns
• τόση for feminine nouns
• τόσο for neuter nouns

Because τόση has to agree with νύστα in gender and number.

• νύστα is feminine singular
• so the matching form is τόση

Greek adjectives and adjective-like words often change form to match the noun they describe.

So:

• τόση νύστα
• not τόσο νύστα

Here που means that in the pattern so ... that.

So the structure is:

• τόση νύστα που... = so much sleepiness that...
• natural English: so sleepy that...

This is a very common Greek pattern:

• Είμαι τόσο κουρασμένος που δεν μπορώ να περπατήσω. = I’m so tired that I can’t walk.

So although που can have other meanings in other contexts, here it introduces the result clause: that I can’t read.

δεν is the normal particle used to negate verbs in Greek in many everyday statements.

• μπορώ = I can
• δεν μπορώ = I can’t

So:

• δεν μπορώ να διαβάσω = I can’t read

In Modern Greek, δεν usually comes directly before the finite verb, here μπορώ.

να introduces the subordinate verb after verbs like can, want, must, try, and many others.

So:

• μπορώ να διαβάσω = I can read
• literally something like I am able to read

You can think of να as a marker that introduces the following verb form. It does not translate neatly into one single English word every time, but in sentences like this it is essential.

Very common patterns:

• θέλω να πάω = I want to go
• πρέπει να φύγω = I must leave
• μπορώ να διαβάσω = I can read

This is an aspect question, and it is very common for learners.

After να, Greek often chooses between:

• present stem: διαβάζω → να διαβάζω
• aorist stem: διαβάσω → να διαβάσω

The difference is usually about aspect, not tense.

Here:

• να διαβάσω presents the action as a whole, as a single event: to read
• να διαβάζω would emphasize ongoing, repeated, or habitual reading: to be reading / to read regularly

In δεν μπορώ να διαβάσω, the aorist form sounds natural because the meaning is basically I’m too sleepy to read at all.

If you said δεν μπορώ να διαβάζω, it would sound more like I can’t keep reading / I can’t read in general or continuously, depending on context.

No. Even though διαβάσω comes from the aorist stem, it is not past tense here.

After να, Greek uses subjunctive-type forms based on either the present stem or the aorist stem. The aorist stem does not automatically mean past.

So:

• διάβασα = I read / I did read in the past
• να διαβάσω = to read / that I read, depending on context, but not past by itself

This is one of the most important things to get used to in Greek: aorist form does not always mean past tense.

The given order is very natural, but Greek word order is more flexible than English.

Standard version:

• Έχω τόση νύστα που δεν μπορώ να διαβάσω.

You may also hear variations for emphasis, but the original is the most neutral and natural for a learner to use.

For example, Greek can move things around more easily than English, but not every rearrangement sounds equally normal in every context. If you are learning, it is best to keep this sentence as it is.

Yes, absolutely. That would also be correct.

It means:

• I am so sleepy that I can’t read

The difference is mostly in expression:

• Έχω τόση νύστα... is a very common everyday way to say it
• Είμαι τόσο νυσταγμένος / νυσταγμένη... uses an adjective and sounds a bit more like the English structure I am sleepy

A learner should know both, but έχω νύστα is especially useful because native speakers say it a lot.

Because Greek often leaves out the article with abstract or general nouns in expressions like this.

So:

• Έχω νύστα = I’m sleepy
• not necessarily I have the sleepiness

Adding an article here would usually sound unnatural in this context. The noun is being used in a general, uncountable way.

The same kind of thing happens in many languages with words like hunger, fear, sleep, and similar states.

Not exactly. νύστα means sleepiness, drowsiness, or feeling sleepy.

So:

• έχω νύστα = I’m sleepy
• θέλω να κοιμηθώ = I want to sleep
• ο ύπνος = sleep as a noun

This is why νύστα fits so well here: the sentence is about being too sleepy to read, not about sleep itself.

Yes. That is a very natural English translation of the idea.

Greek uses the structure:

• so ... that I can’t ...

English often prefers either:

• I’m so sleepy that I can’t read
• or I’m too sleepy to read

Both match the Greek sentence well. The Greek itself is built with τόση ... που ..., literally so much ... that ....