Vi tenner kakelyset, bare bursdagskaken er klar.

Tenner is the present tense of å tenne.

In this context, å tenne means to light something, such as a candle. The same verb can also mean to switch on in other contexts, for example with a lamp or a fire.

So here, tenner means that someone is lighting the candle.

Norwegian often uses the present tense for near-future or planned actions.

So Vi tenner ... can mean either:

• We light ...
• We will light ...

The context tells you whether it is happening now or a little later. If you wanted to make the future idea more explicit, you could also say Vi skal tenne ...

Because Norwegian normally writes compound nouns as a single word.

Here is how they are built:

• kakelyset = kake
  • lys
    • definite ending
• bursdagskaken = bursdag
  • kake
    • definite ending

This is very common in Norwegian. English often separates these ideas into several words, but Norwegian usually joins them.

A useful rule is:

• the last part of the compound is the main noun
• the earlier part or parts describe it

So kakelyset is a kind of lys, and bursdagskaken is a kind of kake.

Those are definite endings, similar to the in English.

• et lys → lyset
• en kake → kaken

In the sentence:

• kakelyset means the cake candle
• bursdagskaken means the birthday cake

In compounds, the gender usually comes from the last element:

• lys is neuter, so you get -et
• kake is common gender in this form, so you get -en

So even though kakelyset starts with kake, it behaves like lys, because lys is the head noun.

Not exactly in the simple only sense.

Here bare introduces a condition, with a meaning like:

• as long as
• provided that
• sometimes if only, depending on context

So this is not bare directly modifying a single word. Instead, it is affecting the whole clause bursdagskaken er klar.

That use of bare can feel a little less direct for English speakers, because English often prefers a clearer connector such as if, when, or as soon as.

Because this is a subordinate-clause pattern, not a main-clause pattern.

In Norwegian main clauses, the finite verb often comes in second position. But in subordinate clauses, the subject usually comes before the verb.

So you get:

• bursdagskaken er klar

not

• er bursdagskaken klar

That is the normal pattern after words that introduce subordinate clauses.

A useful comparison:

• main clause: Bursdagskaken er klar
• yes-no question: Er bursdagskaken klar?
• subordinate clause: ... bare bursdagskaken er klar

Here klar means ready.

It overlaps with ferdig, but there is a slight difference in feel:

• klar often focuses on being ready for use or ready for the next step
• ferdig often focuses on being finished or completed

So for a cake:

• kaken er klar suggests the cake is ready now
• kaken er ferdig suggests the cake has been finished

In many everyday situations, both can work, but klar fits readiness especially well.

It is understandable, but many speakers might choose a clearer connector depending on the exact meaning.

For example:

• Vi tenner kakelyset når bursdagskaken er klar if the meaning is when
• Vi tenner kakelyset så snart bursdagskaken er klar if the meaning is as soon as
• Vi tenner kakelyset hvis bursdagskaken er klar if the meaning is if
• Vi tenner kakelyset bare bursdagskaken er klar can work with a provided that / as long as sense

So the sentence is possible, but it is a bit less straightforward than some alternatives.

The comma marks a pause between the main idea and the condition.

That said, this is not the most textbook-like part of the sentence. In standard, careful writing, many people would prefer to rewrite the sentence with a clearer connector such as når, så snart, or hvis.

So a learner should mainly focus on the structure and meaning, not assume that this comma pattern is the clearest model to copy every time.

Yes.

You could say:

• Bare bursdagskaken er klar, tenner vi kakelyset.

When the subordinate clause comes first, the main clause that follows shows inversion, so tenner comes before vi.

That is a very useful word-order pattern to notice:

• subordinate clause first
• then comma
• then main clause with verb before subject

So this sentence is also a good example of how Norwegian word order changes depending on which clause comes first.