Jeg er enig i planen, hvis vi også køber honning til bollerne.

In Danish, at være enig is the normal way to express to agree.

So:

• Jeg er enig = I agree / I am in agreement
• literally, it is closer to I am agreed or I am in agreement

Danish does have verbs related to agreement in other contexts, but in everyday speech, være enig is the standard expression.

Because Danish uses different prepositions depending on what you agree with:

• enig med nogen = agree with someone
• enig i noget = agree with something, such as an idea, statement, plan, or decision

So:

• Jeg er enig med dig = I agree with you
• Jeg er enig i planen = I agree with the plan

That distinction is very common in Danish.

The -en is the definite article attached to the noun. Danish usually adds the to the end of the noun instead of putting a separate word in front.

So:

• en plan = a plan
• planen = the plan

This is one of the biggest differences from English.

-ne is the usual ending for the definite plural.

Here is the pattern:

• en bolle = a bun / a roll
• boller = buns / rolls
• bollerne = the buns / the rolls

So til bollerne means for the buns or for the rolls.

Because Danish often puts the definite article at the end of the noun.

Compare:

• English: the plan

• Danish: planen

• English: the buns
• Danish: bollerne

This is normal when the noun stands by itself. Danish can also use a separate definite word in some other structures, especially with adjectives, but not here.

Because in a subordinate clause introduced by hvis, Danish word order changes.

The clause is:

• hvis vi også køber honning til bollerne

Structure:

• hvis = if
• vi = subject
• også = adverb
• køber = verb

In this kind of clause, adverbs like også, ikke, altid, and so on often come before the finite verb.

Compare:

• main clause: Vi køber også honning
• subordinate clause: hvis vi også køber honning

So the position of også is tied to Danish clause word order.

Yes, køber is present tense.

But Danish, like English, often uses the present tense for future meaning when the context makes it clear. After hvis especially, this is very normal.

So:

• hvis vi også køber honning = if we also buy honey / if we also end up buying honey

Danish does not need a special future form here.

Because køber is a finite verb in a full clause, not an infinitive.

• at købe = to buy
• vi køber = we buy / we are buying

After hvis, Danish uses a normal clause:

• hvis vi køber honning = if we buy honey

You would only use at with the infinitive form:

• Vi vil købe honning = We want to buy honey
• Det er godt at købe honning = It is good to buy honey

Here til means something like for, to go with, or intended for.

So:

• honning til bollerne = honey for the buns

It suggests the honey is meant to be eaten with them.

If you said på bollerne, that would mean on the buns, focusing more on physical placement. In many contexts, til is the more natural choice when talking about something served alongside food.

Because the subject is singular:

• jeg = I

So Danish uses:

• Jeg er enig = I agree

With a plural subject, you often get:

• Vi er enige = We agree

So enig matches the singular subject here.

The sentence has a main clause and a subordinate clause.

Main clause:

• Jeg = subject
• er = verb
• enig i planen = complement

So:

• Jeg er enig i planen = I agree with the plan

Subordinate clause:

• hvis = if
• vi = subject
• også = adverb
• køber = verb
• honning til bollerne = object + prepositional phrase

So:

• hvis vi også køber honning til bollerne = if we also buy honey for the buns

A useful thing to notice is this:

• in the main clause, the verb comes early: Jeg er ...
• in the hvis clause, the adverb også comes before the verb: vi også køber

Yes. Danish can move the if clause to the front:

• Hvis vi også køber honning til bollerne, er jeg enig i planen.

That means the same thing.

When the subordinate clause comes first, the main clause changes word order, so you get:

• ... er jeg ... not
• ... jeg er ...

That inversion is a very important Danish pattern.