Wer hat erwähnt, dass wir die Sammlung katalogisieren?

Breakdown of Wer hat erwähnt, dass wir die Sammlung katalogisieren?

haben
to have
wir
we
wer
who
dass
that
erwähnen
to mention
die Sammlung
the collection
katalogisieren
to catalogue

Questions & Answers about Wer hat erwähnt, dass wir die Sammlung katalogisieren?

Since this lesson is about using wie, why does this sentence use dass instead?
The word wie means "as" or "how", for example in wie ich erwähnt habe which means "as I mentioned". However, this sentence is stating the actual fact that was mentioned. To say "mentioned that", you must use the conjunction dass.
Why is the verb katalogisieren at the very end of the sentence?
It is pushed to the end of its clause by the subordinating conjunction dass. In German, clauses starting with words like dass, weil, or ob always send their conjugated verb to the very end.
What kind of verb is katalogisieren, and how do you form its past tense?
It is a regular weak verb ending in -ieren. These verbs are special because they never take a ge- prefix in the perfect tense. If you wanted to say "we have catalogued", it would simply be wir haben katalogisiert.
Why does the sentence use the perfect tense hat erwähnt rather than the simple past erwähnte?
The perfect tense hat erwähnt is the standard conversational past tense in German. Using the simple past erwähnte is grammatically correct but sounds very formal and is mostly reserved for written texts like books or news articles.

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