Jeg kjøpte vekkerklokken for tre dager siden.

I bought the alarm clock three days ago.

Breakdown of Jeg kjøpte vekkerklokken for tre dager siden.

• jeg: I
• kjøpe: to buy
• vekkerklokken: the alarm clock
• for tre dager siden: three days ago

Questions & Answers about Jeg kjøpte vekkerklokken for tre dager siden.

What tense is kjøpte, and why is it used here instead of the present perfect?

kjøpte is the simple past (preterite) form of kjøpe (“to buy”). In Norwegian, when you specify a clear point in the past—such as for tre dager siden (“three days ago”)—you normally use the preterite. The present perfect (har kjøpt) is used for actions without a specific past time.

What does the construction for tre dager siden mean, and how does it work?

for tre dager siden literally breaks down into for + duration + siden, but functions as “three days ago.” It’s a fixed pattern:

• for = “for” (duration marker)
• tre dager = “three days”
• siden = “since/ago”
  Together they indicate how long ago an event happened.

Is siden the same as “since” in English?

Not exactly. In for tre dager siden, siden is part of the “ago” construction. When siden follows a present perfect verb, it means “since,” as in Jeg har bodd her siden 2018 (“I have lived here since 2018”). But after for + duration, siden turns the phrase into an “ago” expression.

Why isn’t there an article like en before vekkerklokken?

vekkerklokken is in its definite form—the alarm clock. If you want to say an alarm clock, you’d use the indefinite singular:
• en vekkerklokke (an alarm clock)
• vekkerklokken (the alarm clock)

How do you form plural and definite plural of vekkerklokke?

• Indefinite plural: vekkerklokker (alarm clocks)
• Definite plural: vekkerklokkene (the alarm clocks)

Why does vekkerklokke have two k’s in the middle?

It’s a compound of vekk(er) (from vekke, “to wake”) + klokke (“clock”). When a word ending in k is compounded with a word starting in k, you get a double k.

Can I move for tre dager siden to the beginning of the sentence?

Yes. Norwegian follows the V2 rule (verb-second). If you start with the time expression, the verb still comes second:
• For tre dager siden kjøpte jeg vekkerklokken.

Are there other ways to say “three days ago” in Norwegian?

A common alternative is using tilbake:
• Jeg kjøpte vekkerklokken tre dager tilbake.
Both expressions are understood, though for tre dager siden is more standard.