Hun ble veldig takknemlig da naboen kom innom med en varm suppe.

Ble is the past tense of bli, which often means become.

So Hun ble veldig takknemlig means She became very grateful.

That is different from var, which is the past tense of være (to be).

• Hun var veldig takknemlig = She was very grateful
• Hun ble veldig takknemlig = She became very grateful

Using ble shows a change of state: she was not necessarily grateful before, but then something happened and she became grateful.

Takknemlig is an adjective, meaning grateful or thankful.

Here it describes hun:

• Hun ble takknemlig = She became grateful

Like many Norwegian adjectives, it can change form depending on gender, number, and definiteness in some contexts:

• en takknemlig person
• et takknemlig barn
• takknemlige mennesker

But after ble, it stays in the basic form here: takknemlig.

Veldig means very, and in Norwegian it usually comes before the adjective or adverb it modifies.

So:

• veldig takknemlig = very grateful

This works much like English:

• very happy
• very tired
• very grateful

So the order is natural:

• Hun ble veldig takknemlig

Here da means when and refers to a specific event in the past.

The sentence is talking about one particular moment:

• da naboen kom innom = when the neighbor stopped by

A very common rule is:

• da = when for a specific past event
• når = when for repeated events, general truths, or the future

Examples:

• Jeg ble glad da hun kom. = I became happy when she came.
• Jeg blir glad når hun kommer. = I get happy when she comes / I will be happy when she comes.

So da is the correct choice here because this is one completed past situation.

Naboen means the neighbor. The ending -en is the definite article attached to the noun.

So:

• en nabo = a neighbor
• naboen = the neighbor

In Norwegian, definiteness is usually shown by adding an ending to the noun:

• en bil → bilen
• en katt → katten
• en nabo → naboen

Here the sentence refers to a specific neighbor, so naboen is used.

Kom innom is a common expression meaning stopped by, dropped by, or came over briefly.

• kom = came
• kom innom = came by / stopped by

So naboen kom innom suggests the neighbor visited informally, probably for a short time.

This is more natural than plain kom if you want to express the idea of dropping in.

Examples:

• Kan du komme innom senere? = Can you stop by later?
• Hun kom innom med kaffe. = She stopped by with coffee.

Med means with.

So:

• med en varm suppe = with a warm soup

It tells you what the neighbor brought when stopping by.

Structure:

• kom innom med ... = stopped by with ...

In natural English, you might often translate the whole idea as:

• The neighbor stopped by with some hot soup or
• The neighbor came over with a warm soup

Because suppe is a countable noun here, Norwegian normally uses an article in this kind of sentence.

So:

• en varm suppe = a warm soup

If you say only varm suppe, it sounds more like the general substance hot soup rather than one serving/container brought by the neighbor.

A learner should also know that in very natural English, some hot soup may sound more idiomatic than a warm soup, but the Norwegian structure itself is perfectly normal:

• med en varm suppe

Yes. Suppe is traditionally a feminine noun, so in Bokmål you may also see:

• ei varm suppe

But Bokmål often allows many feminine nouns to be treated as masculine too:

• en varm suppe

Both are acceptable in Bokmål, depending on style and preference.

So:

• ei suppe / suppa = feminine-style forms
• en suppe / suppen = masculine-style forms

The sentence uses the common Bokmål option en varm suppe.

This is a subordinate clause introduced by da.

The order is:

• da
  • subject + verb + other elements

So:

• da naboen kom innom

That is normal Norwegian subordinate clause word order.

The whole sentence is:

• main clause: Hun ble veldig takknemlig
• subordinate clause: da naboen kom innom med en varm suppe

A useful thing to notice is that the verb stays after the subject in the da-clause:

• da naboen kom innom not
• da kom naboen innom

Yes. You can also say:

• Da naboen kom innom med en varm suppe, ble hun veldig takknemlig.

That means the same thing.

But if the sentence starts with the da-clause, the main clause follows normal Norwegian V2 word order, so the verb comes before the subject:

• ..., ble hun ... not
• ..., hun ble ...

So compare:

• Hun ble veldig takknemlig da naboen kom innom med en varm suppe.
• Da naboen kom innom med en varm suppe, ble hun veldig takknemlig.

Both are correct.

Varm usually means warm, but in context it can sometimes overlap with English hot, especially with food.

So en varm suppe could be understood as:

• a warm soup
• some hot soup

In many real-life English translations, hot soup might sound more natural, even though the Norwegian word is varm.

Norwegian often uses varm in places where English might choose either warm or hot, depending on context.

A natural reading would usually put stress on the key information:

• Hun ble veldig takknemlig da naboen kom innom med en varm suppe.

Common stress points might be:

• veldig takknemlig
• naboen
• varm suppe

So it might sound roughly like:

• Hun ble veldig takknemlig da naboen kom innom med en varm suppe.

This helps highlight:

1. her emotional reaction
2. who caused it
3. what the neighbor brought