Questions & Answers about Άνοιξαν τη σαμπάνια χτες.
Άνοιξαν is the 3rd person plural aorist form of ανοίγω (to open).
So it means they opened.
A few useful details:
- ανοίγω = I open / to open
- άνοιξα = I opened
- άνοιξαν = they opened
The aorist is the usual Greek past tense for a single completed action. In this sentence, it presents the opening as a finished event.
Greek often drops subject pronouns when they are not needed.
So instead of saying:
- Αυτοί άνοιξαν τη σαμπάνια χτες. = They opened the champagne yesterday.
Greek normally just says:
- Άνοιξαν τη σαμπάνια χτες.
The ending -αν in άνοιξαν already tells you the subject is they, so αυτοί is usually unnecessary unless you want emphasis or contrast.