Πριν βάλω το ράφι, ανέβηκα ένα σκαλοπάτι και κράτησα καλά το τρυπάνι.

Before I put up the shelf, I went up one step and held the drill firmly.

Breakdown of Πριν βάλω το ράφι, ανέβηκα ένα σκαλοπάτι και κράτησα καλά το τρυπάνι.

• και: and
• πριν: before
• ένα: one
• ανεβαίνω: to go up

Questions & Answers about Πριν βάλω το ράφι, ανέβηκα ένα σκαλοπάτι και κράτησα καλά το τρυπάνι.

Why is it βάλω after πριν, not έβαλα or βάζω?

After πριν (before), Greek usually uses the subjunctive / perfective non-past to refer to an action that is still pending relative to the main action. So πριν βάλω το ράφι means before I put up / install the shelf.

Why this form?

• βάλω presents the action as one complete act
• έβαλα is a normal past tense form
• βάζω would sound more ongoing, repeated, or less bounded

So βάλω is the natural choice here.

Is βάλω a future tense?

Not by itself. βάλω is the same form Greek uses in several structures. It can have future meaning only when something like θα is added:

• θα βάλω = I will put / install
• πριν βάλω = before I put / install

So in this sentence, βάλω is not a future tense by itself. It is the form Greek uses after πριν.

Can Greek also say πριν να βάλω?

Yes. You can hear both:

• πριν βάλω
• πριν να βάλω

Both are natural. The version without να is very common in everyday Greek.

What tense is ανέβηκα?