Im Fundbüro frage ich nach der vermissten Tasche.

Im is just the common contraction of in dem.

• in dem Fundbüro = literally in the lost-and-found office
• im Fundbüro = the same thing, but more natural in everyday German

Here, in is used for a location, so it takes the dative case, which is why the article is dem. German very often contracts in dem to im.

Fundbüro is a compound noun:

• Fund = something found / lost property
• Büro = office

So Fundbüro means lost-and-found office or lost property office.

Like all German nouns, it is capitalized: Fundbüro.

Because German is a verb-second language in main clauses.

In this sentence, Im Fundbüro comes first for emphasis or to set the scene. Once that first element takes position 1, the conjugated verb must come in position 2:

• Im Fundbüro = position 1
• frage = position 2
• ich = then the subject comes after the verb

So:

• Ich frage im Fundbüro nach der vermissten Tasche.
• Im Fundbüro frage ich nach der vermissten Tasche.

Both are correct. The second one emphasizes where the action is happening.

That is a very common question. The meaning of nach depends a lot on the verb or expression it is used with.

Here, the key expression is:

• nach etwas fragen = to ask for something / ask about something

So in this sentence:

• nach der vermissten Tasche fragen = to ask about / ask for the missing bag

This is just a fixed German pattern. You should learn fragen nach + dative as a unit.

Because nach takes the dative case here.

The basic noun phrase is:

• die vermisste Tasche = nominative/accusative feminine singular

But after nach, it changes to dative:

• der vermissten Tasche

So the article changes:

• die → der

And the adjective ending changes too:

• vermisste → vermissten

That is why the full phrase is nach der vermissten Tasche.

Because the adjective is following a definite article in the dative feminine singular.

The noun is die Tasche and the adjective is vermisst. In dictionary form, you might think of:

• die vermisste Tasche

But after nach, the phrase becomes dative:

• nach der vermissten Tasche

So the adjective gets the ending -en.

This is a normal adjective ending pattern after der in the dative singular.

Not exactly.

• vermisst = missing
• verloren = lost

A vermisste Tasche is a missing bag — a bag that cannot currently be found. A verlorene Tasche is a lost bag — emphasizing that it was lost.

In many real-life situations, both can make sense, but they are not identical in tone:

• vermisst focuses on the fact that the item is absent
• verloren focuses on the fact that someone lost it

In a lost-and-found context, vermisst sounds very natural.

Not in the same way as a separable-prefix verb such as anrufen → ich rufe an.

Here, fragen is the normal verb, and nach is a preposition that belongs to the expression nach etwas fragen. So:

• Ich frage nach der Tasche.
• Er fragt nach seinem Handy.

You should think of it as a verb + prepositional phrase, not as one separable verb.

Yes, absolutely.

That version is probably the more neutral one if you are just stating what you do:

• Ich frage im Fundbüro nach der vermissten Tasche.

The original sentence

• Im Fundbüro frage ich nach der vermissten Tasche.

puts more attention on Im Fundbüro. English often does something similar with stress: At the lost-and-found office, I ask about the missing bag.

In this sentence, it can be understood naturally as at the lost-and-found office, even though the literal German wording is in the office.

German in often covers situations where English would choose either in or at, depending on context. So here:

• literal: in the lost-and-found office
• natural English meaning: at the lost-and-found office

Yes. It is completely normal when something other than the subject comes first.

German main clauses usually follow this pattern:

• first element
• conjugated verb
• then the rest

If the subject is not first, it often comes right after the verb.

So:

• Ich frage im Fundbüro ... = subject first
• Im Fundbüro frage ich ... = location first, subject after verb

This is one of the most important German word-order rules to get used to.

Yes. frage is the present tense form of fragen for ich.

German present tense is used very broadly. Depending on context, it can mean:

• I am asking
• I ask
• I will ask

So this sentence could describe what is happening now, what you usually do in this situation, or even a planned next step if the context makes that clear.

Because German uses a different structure from English here.

English says:

• ask for the bag

German normally says:

• nach der Tasche fragen

So German does not need a separate word that directly matches English for in this expression. The preposition nach already belongs to the fixed pattern nach etwas fragen.

Not with the same meaning.

• nach der Tasche fragen = to ask about the bag
• die Tasche suchen = to look for the bag

So:

• Im Fundbüro frage ich nach der vermissten Tasche.
  = I ask the staff there about it.
• Im Fundbüro suche ich die vermisste Tasche.
  = I am physically searching for it there.

The original sentence is about asking, not searching.

Because German very often forms compound nouns by writing them as a single word.

So:

• Fund
  • Büro = Fundbüro

This is completely normal in German. English often uses separate words or hyphens where German uses one long noun.