Wir prüfen morgen die Vertragsverlängerung.

German very often uses the present tense to talk about the future when the time is already clear from context.

Here, morgen tells you the action happens in the future, so Wir prüfen morgen ... is completely natural.

You could also say Wir werden morgen die Vertragsverlängerung prüfen, but that is usually less common in everyday German unless you want extra emphasis on the future.

Here, morgen means tomorrow.

A useful distinction is:

• morgen = tomorrow
• morgens = in the mornings / every morning
• am Morgen = in the morning
• Morgen with a capital letter is the noun morning

Because this word is written morgen and used as an adverb of time, it means tomorrow in this sentence.

In a normal German main clause, the conjugated verb usually comes in second position.

So the structure here is:

• Wir = subject
• prüfen = conjugated verb
• morgen = time expression
• die Vertragsverlängerung = object

This is a very standard sentence pattern.

German often places time expressions like morgen before the object, so this word order sounds natural.

Yes, absolutely.

That version is also correct and very natural. German allows different elements to come first in a main clause, but the verb must still stay in second position.

So:

• Wir prüfen morgen die Vertragsverlängerung.
• Morgen prüfen wir die Vertragsverlängerung.

Both are correct.

The difference is mainly emphasis:

• Wir prüfen morgen ... = neutral statement
• Morgen prüfen wir ... = extra emphasis on tomorrow

Vertragsverlängerung is a feminine noun, so its article is die.

In this sentence, it is the direct object, so it is in the accusative case. For feminine nouns, the accusative article is still die.

So:

• nominative: die Vertragsverlängerung
• accusative: die Vertragsverlängerung

That is why the form does not change here.

Because it is the thing being checked/reviewed.

The verb prüfen usually takes an object in the accusative case. If you ask:

• What are we reviewing/checking?

the answer is:

• die Vertragsverlängerung

So it functions as the direct object of prüfen.

Yes. German often combines several ideas into one long compound noun.

Vertragsverlängerung is made up of:

• Vertrag = contract
• -s- = linking element
• Verlängerung = extension / renewal

So literally it is something like contract-extension, meaning contract renewal or extension of a contract.

This kind of compound is extremely common in German.

Not necessarily.

prüfen usually means something like:

• check
• review
• examine
• look into

So Wir prüfen morgen die Vertragsverlängerung means that we will review/check the contract extension tomorrow.

It does not automatically mean that the extension will be accepted or approved. It only says that it will be examined.

The difficult part for many English speakers is ü.

A helpful approximation:

• Start by saying ee as in see
• Then round your lips as if you were going to say oo

That gives you a sound close to German ü.

So prüfen is roughly pronounced like PRUE-fen, but with a real German ü sound, not plain u.

The stress is on the first syllable: PRÜ-fen.

Normally, no. German usually requires an explicit subject in a full sentence.

So you say:

• Wir prüfen morgen die Vertragsverlängerung.

and not just:

• Prüfen morgen die Vertragsverlängerung.

German verbs do change according to the subject, but not enough to make the subject easy to omit in ordinary statements. So unlike Spanish or Italian, German generally keeps the subject pronoun.