Questions & Answers about Vinduet åpnes automatisk.
åpnes is present-tense passive (the “s-passive”). An alternative is the “bli-passive”:
• vinduet blir åpnet also means “the window is opened.”
Both are common, but åpnes is shorter and frequently seen in instructions or automated messages.
It’s omitted because the doer is unknown or irrelevant. If you need to mention it, use av + agent:
• Vinduet åpnes automatisk av sensoren.
(“The window is opened automatically by the sensor.”)
Here automatisk describes how the window opens, so it functions as an adverb. In Norwegian many adjectives double as adverbs without alteration:
• rask → kjører rask (“drives quickly”)
• automatisk → åpnes automatisk (“opens automatically”)
The Norwegian å sounds like the “o” in English born or more. Approximate pronunciations:
• åpnes ≈ “OHP-nes”
• vinduet ≈ “VIN-doo-et” (three syllables: VIN-du-et)