In German, most verbs follow a standard conjugation pattern. However, certain verb stems require minor adjustments to make them easier to pronounce or to reflect common spoken usage. Here are the most important special patterns:
When a verb stem ends in a "sibilant" (an s-like sound), we do not add an extra -s for the second person singular (du). Instead of the usual -st ending, we only add a -t. This is because the "s" sound is already present in the stem.
Note: While you might see forms like "du sitzest" in very old literature or specific Swiss contexts, they are considered archaic in modern Standard German.
Verbs like klingeln (to ring) or wandern (to hike) have unique behaviors in the first person and plural forms.
When a verb stem ends in a long vowel or a diphthong (two vowels combined), the -e- in the conjugation endings is often omitted for brevity.
In everyday spoken German, many verbs lose the -e- in the -en ending. While this is most common in speech, you will sometimes see these shortened forms in informal writing or poetry.
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