Breakdown of Die Länge vom Becken ist am wichtigsten.
sein
to be
wichtig
important
vom
from the (von + dem) / of the (belonging to) / by the (agent in a passive clause)
am
the most (superlative marker)
der
who, which, that (relative pronoun; die, das)
das Becken
the tank
die Länge
the length
Questions & Answers about Die Länge vom Becken ist am wichtigsten.
How is the noun Länge formed from the adjective for "long"?
The noun die Länge (the length) is derived from the adjective lang (long). By adding the suffix -e and applying an umlaut to the stem vowel (a becomes ä), we create a feminine abstract noun. This is exactly the same pattern as turning groß into die Größe (size).
Why does the sentence use vom Becken instead of the genitive des Beckens?
Vom Becken is a contraction of von dem Becken (dative). While the genitive (die Länge des Beckens) would be standard in formal writing to express "the length of the tank", using von + dative is extremely common in everyday spoken German to show possession. At a B2 level, you'll frequently hear this substitution.
What exactly does Becken mean here? I usually see it translated as "pool" or "pelvis".
Das Becken is a versatile noun that generally refers to any basin-like structure. Depending on the context, it can mean a swimming pool (das Schwimmbecken), the anatomical pelvis, a sink (das Waschbecken), or, as in this sentence, an animal enclosure tank or aquarium.
Why is the superlative written as am wichtigsten rather than die wichtigste?
Because the superlative is acting as a predicate adjective here—it describes the subject (Die Länge) but comes after the linking verb (ist) rather than directly before a noun. When a superlative stands alone like this, you must use the am ...-sten structure. You would only use die wichtigste if it were directly attached to a feminine noun, like die wichtigste Länge (the most important length).
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