Τρυπάω τον τοίχο για να βάλω ένα ράφι στο σαλόνι.

More or less, yes. Τρυπάω means to pierce, to make a hole in, or to poke through. In a sentence about a wall and a shelf, the natural English equivalent is often to drill.

So here it does not just mean making a random hole by any method; in context, it strongly suggests drilling holes in the wall so the shelf can be mounted.

Yes. Both τρυπάω and τρυπώ are used in Modern Greek.

Many Greek verbs have two present-tense forms like this:

• τρυπάω
• τρυπώ

They mean the same thing. Τρυπάω may feel a bit more everyday or transparent to learners, while τρυπώ is a shorter alternative you will also hear and see.

Because τον τοίχο is the direct object of the verb τρυπάω.

In dictionary form, the noun is:

• ο τοίχος = the wall subject form, nominative

But after a verb when the wall is the thing being drilled, Greek uses the accusative:

• τον τοίχο

So:

• ο τοίχος = the wall as subject
• τον τοίχο = the wall as object

This is exactly why the article changes from ο to τον.

Για να introduces a purpose clause. It means in order to or so that I can.

So:

• τρυπάω τον τοίχο για να βάλω ένα ράφι
  = I’m drilling the wall in order to put up a shelf

This is a very common Greek pattern:

• για να + verb

It expresses the reason or goal behind the action.

Because Modern Greek does not normally use an infinitive the way English does.

English says:

• to put

Modern Greek usually uses:

• να βάλω

So where English often has to + verb, Greek often has να + verb.

In this sentence, για να βάλω corresponds to English in order to put. For an English speaker, this is one of the biggest structural differences between the two languages.

Because βάλω is the perfective form, and here the sentence refers to a single complete action: putting up one shelf.

The verb pair is:

• βάζω = imperfective, ongoing/repeated I put / I am putting
• βάλω = perfective form used after να, referring to one complete act to put / to put once

So:

• για να βάλω ένα ράφι = in order to put up one shelf

If you used να βάζω, it would sound more like a repeated or ongoing action, which does not fit this context as well.

No. That is a very common confusion.

Βάλω is not past tense here. It is the perfective form used after να. You can think of it as a subjunctive-type form, or simply the να-form of the verb.

Compare:

• έβαλα = I put, past
• να βάλω = that I put / to put, not past

So even though βάλω is built from the same stem associated with the aorist, in this sentence it is not a past tense.

Yes. Greek often uses βάζω in a broader way than English put.

In English, we often say:

• put up a shelf
• install a shelf
• mount a shelf

Greek can simply say:

• βάζω ένα ράφι

So the Greek verb is very natural here, even if a literal English translation with just put sounds too simple.

Because ράφι is a neuter noun.

Its article in the singular is:

• ένα = a/an for neuter nouns

So:

• ένα ράφι = a shelf

This is different from masculine nouns, which would use έναν in the accusative singular, and feminine nouns, which would use μια or μία.

Also, ράφι has the same form in nominative and accusative singular, so only the article clearly shows the gender here.

Στο is the contraction of:

• σε + το = στο

The preposition σε is very common and can cover meanings like in, at, on, or to, depending on context.

So:

• στο σαλόνι = in the living room

This is a normal Greek way to express location:

• στο σπίτι = in the house / at home
• στο τραπέζι = on the table
• στο σχολείο = at school

Not in this sentence. In everyday Modern Greek, το σαλόνι usually means the living room or lounge.

So although it looks similar to the English word salon, the usual meaning in a home context is living room.

That is why στο σαλόνι is translated as in the living room.

Yes. Greek word order is more flexible than English word order.

The original sentence is perfectly natural:

• Τρυπάω τον τοίχο για να βάλω ένα ράφι στο σαλόνι.

But you could also say:

• Για να βάλω ένα ράφι στο σαλόνι, τρυπάω τον τοίχο.

The basic meaning stays the same. The difference is mainly one of focus or style:

• starting with Τρυπάω τον τοίχο... focuses first on the action
• starting with Για να βάλω... focuses first on the purpose

Greek present tense often works like English I am drilling or I drill, depending on context.

So τρυπάω here can describe:

• what I am doing right now
• the action I am in the process of carrying out

Greek does not always need a separate continuous form the way English does. Very often, the plain present form covers that meaning naturally.