Breakdown of Der Experte muss sowohl die Härte als auch die Säure testen.
müssen
to have to, must
der
who, which, that (relative pronoun; die, das)
der Experte
the expert
testen
to test (try out)
Questions & Answers about Der Experte muss sowohl die Härte als auch die Säure testen.
How is the noun Härte formed from the adjective hart?
To create an abstract noun from a one-syllable adjective like hart, German often adds the suffix -e and puts an umlaut on the main vowel. This gives us die Härte (the hardness). Nouns formed this way are always feminine.
Where does the noun Säure come from, and why does it have an äu?
It comes from the adjective sauer (sour or acidic). The stem of this adjective is saur- (as seen in forms like the feminine adjective saure). Following the same rule used for Härte, we add the suffix -e and apply an umlaut to the vowel combination au, which turns into äu. This creates the feminine noun die Säure (the acid or acidity).
Why does the sentence use sowohl die Härte als auch die Säure instead of just linking them with und?
The phrase sowohl ... als auch is a two-part conjunction meaning 'both ... and ...'. While you could grammatically use und, this structure puts special emphasis on the fact that the expert must test two distinct properties, making it sound more professional and precise.
Since Experte ends in an -e, is it a feminine noun?