Arrangören samordnar volontärarbetet genom att ringa sponsorn.

In Swedish, the definite article is usually attached to the end of the noun instead of being a separate word.

So:

• arrangör = organizer

• arrangören = the organizer

• sponsor = sponsor

• sponsorn = the sponsor

• volontärarbete = volunteer work
• volontärarbetet = the volunteer work

This is very common in Swedish. English says the organizer, but Swedish often says arrangören as a single word.

Their basic forms are:

• arrangören → arrangör
• volontärarbetet → volontärarbete
• sponsorn → sponsor

The endings show definiteness:

• -en is a common definite ending for many en-words
• -et is a common definite ending for many ett-words

So if you look words up in a dictionary, you usually need the indefinite base form.

Samordnar is the present tense form of the verb samordna.

• att samordna = to coordinate
• samordnar = coordinates / is coordinating

In Swedish, present tense often ends in -r:

• att tala → talar
• att arbeta → arbetar
• att samordna → samordnar

So Arrangören samordnar... means The organizer coordinates...

Genom att means by in the sense of by doing something.

So:

• genom att ringa sponsorn = by calling the sponsor

This is a very common Swedish pattern:

• Hon lär sig svenska genom att läsa. = She learns Swedish by reading.
• Vi sparar tid genom att planera. = We save time by planning.

So genom att + infinitive is a useful structure for expressing method.

After att, Swedish normally uses the infinitive form of the verb.

• att ringa = to call
• ringer = calls / is calling

Since the sentence has genom att, the verb after it stays in the infinitive:

• genom att ringa sponsorn = by calling the sponsor

Not:

• genom att ringer sponsorn

That would be ungrammatical.

Yes. Swedish very often combines nouns into one compound word.

Here:

• volontär = volunteer
• arbete = work
• volontärarbete = volunteer work
• volontärarbetet = the volunteer work

English often writes similar ideas as two words, but Swedish frequently prefers one compound word.

This is an important habit to get used to in Swedish.

This is standard Swedish main-clause word order:

1. Arrangören = subject
2. samordnar = verb
3. volontärarbetet = object
4. genom att ringa sponsorn = adverbial phrase explaining how

So the structure is basically:

Subject + Verb + Object + How/Method

That matches normal English order quite closely here, which makes this sentence relatively easy for English speakers.

Sponsorn is definite: the sponsor.

Using the definite form suggests that the speaker has a specific sponsor in mind, not just any sponsor.

Compare:

• ringa sponsor = call a sponsor / call sponsor (not natural here)
• ringa en sponsor = call a sponsor
• ringa sponsorn = call the sponsor

So sponsorn is used because the sentence refers to a particular sponsor.

It is an ett word:

• ett volontärarbete
• volontärarbetet

That is why the definite ending is -et.

By contrast:

• en arrangör → arrangören
• en sponsor → sponsorn

Learning whether a noun is an en word or an ett word is important, because it affects articles, adjective forms, and definite endings.

In this sentence, ringa means to call, usually by telephone.

So:

• ringa sponsorn = call the sponsor / phone the sponsor

Even though older English can use ring in a similar way, the most natural translation for many learners is call or phone.

The letter ö is a separate Swedish vowel. It is not pronounced like English o.

A rough guide:

• ö sounds somewhat like the vowel in British English bird, word, or learn, but not exactly.
• In arrangören, both ö sounds use that vowel quality.

A rough learner-friendly pronunciation of arrangören might be:

• ah-rang-YUR-en

That is only approximate, but it helps show that ö is a distinct sound you need to learn separately from o.

Yes, Swedish often allows some movement, especially if you want to emphasize the method.

For example:

• Arrangören samordnar volontärarbetet genom att ringa sponsorn.
• Genom att ringa sponsorn samordnar arrangören volontärarbetet.

Both are grammatical, but the second version puts more focus on how the organizer does it.

Notice that when a phrase comes first in a Swedish main clause, the finite verb still stays in second position:

• Genom att ringa sponsorn
  • samordnar
    • arrangören ...

This is part of Swedish’s V2 word order rule.