Kennslustundin byrjar klukkan átta.

The lesson starts at eight.

Breakdown of Kennslustundin byrjar klukkan átta.

• byrja: to start
• klukka: the clock
• kennslustundin: the lesson
• átta: eight

Questions & Answers about Kennslustundin byrjar klukkan átta.

Why does kennslustundin end with -in?

The suffix -in is the definite article in Icelandic. You attach it to the end of a feminine noun to make it “the ….” So:
• kennslustund = a lesson/class session
• kennslustundin = the lesson/class session

What is the grammatical role of kennslustundin in this sentence?

kennslustundin is the subject of the sentence. It’s in the nominative singular (subjects are in nominative) and means “(this) class session” or “the lesson.”

Why is the verb byrjar used, and what form is it?

byrjar is the 3rd person singular present tense of að byrja (“to begin/start”). Because the subject (kennslustundin) is 3rd person singular, we use byrjar: “(it) starts/begins.”

Why is there no preposition before klukkan átta, and what does klukkan mean here?

When stating an exact start time in Icelandic, you don’t need a preposition like at or um – you just say klukkan plus the numeral.
• klukka = “clock”
• klukkan = “the clock” (definite)
• klukkan átta = “eight o’clock”

Does klukkan átta change its form for case, like other phrases in Icelandic?

No, klukkan átta is a fixed time expression. You always use the definite form klukkan and the base numeral átta. You don’t need to worry about other case endings here.

Can I move klukkan átta to the front of the sentence like in English?

Yes. Icelandic follows V2 word order: the finite verb stays in second position. So you can say:
Klukkan átta byrjar kennslustundin.
Here Klukkan átta is first, byrjar (the verb) is second, then the subject.

How would I say “A lesson starts at eight o’clock” without using the definite article?

Icelandic doesn’t use a separate indefinite article word. You just drop the suffix -in:
Kennslustund byrjar klukkan átta.
That can mean “a lesson” or “lessons in general” start at eight.