Κάθομαι στο σκαμπό της κουζίνας και τρώω πρωινό.

Greek often leaves out subject pronouns because the verb ending already tells you who is doing the action.

• κάθομαι = I sit / I am sitting
• τρώω = I eat / I am eating

So εγώ is not necessary. You would add it mainly for emphasis or contrast.

Κάθομαι means I sit or I am sitting. In this sentence, the natural English meaning is I am sitting.

It is the 1st person singular present tense form. This verb looks middle/passive in form, but its meaning is active.

Στο is the contracted form of σε + το.

• σε = a very common preposition that can mean in, at, on, to
• το = the for a neuter singular noun

So:

• σε το σκαμπό becomes στο σκαμπό

This contraction is standard Greek.

Because Greek σε covers several meanings that English splits into different prepositions, such as in, at, and on.

So Greek says:

• κάθομαι στο σκαμπό

Even though natural English is:

• I am sitting on the stool

Greek does not need a separate everyday word here just for on.

After σε, the noun is in the accusative. But many neuter nouns have the same form in the nominative and accusative singular.

So:

• το σκαμπό = the stool
• στο σκαμπό = on the stool

The noun itself stays the same in appearance, and the article helps show the grammar.

Also, σκαμπό is a loanword and is commonly used with very little visible change.

Της κουζίνας is the genitive, which here means of the kitchen.

So:

• το σκαμπό της κουζίνας = the kitchen stool
• more literally: the stool of the kitchen

Greek often uses the genitive to show possession or close connection.

Because after της, the noun must be in the genitive singular form.

The basic form is:

• η κουζίνα = the kitchen

But the genitive is:

• της κουζίνας = of the kitchen

So the ending changes from -α to -ας.

It means I eat breakfast or, in this context, I am eating breakfast.

This is a very normal Greek way to talk about meals:

• τρώω πρωινό = eat breakfast
• τρώω μεσημεριανό = eat lunch
• τρώω βραδινό = eat dinner

Because Greek often leaves out the article when talking about a meal in a general way.

• τρώω πρωινό = I am eating breakfast

If you said:

• τρώω το πρωινό

that would sound more like I am eating the breakfast, meaning a specific breakfast already known from the context.

Yes. They are both present tense forms.

In Greek, the present tense can often match either:

• I sit / I eat
• I am sitting / I am eating

The context decides which English version sounds best. In this sentence, the ongoing meaning is the natural one, so I am sitting and I am eating fits best.

Και means and. It simply connects the two actions:

• Κάθομαι ... και τρώω ...
• I am sitting ... and eating ...

This is the normal way to join two verbs in a sentence.

Yes. Greek word order is more flexible than English.

The original sentence is a neutral, natural order:

• Κάθομαι στο σκαμπό της κουζίνας και τρώω πρωινό.

But Greek can move things around for emphasis. For example:

• Στο σκαμπό της κουζίνας κάθομαι και τρώω πρωινό.

That puts more emphasis on where the speaker is sitting.

A simple pronunciation guide is:

KA-tho-me sto skam-BO tis kou-ZI-nas ke TRO-o pro-i-NO

A few helpful points:

• θ sounds like th in think
• αι sounds like e
• ου sounds like oo in food
• και is often pronounced like ke in normal speech
• τρώω is roughly TRO-o, with both vowels pronounced