Umlauts in German are diacritical marks that change the pronunciation of vowel letters. They are indicated by two dots placed above the vowel: ä, ö, and ü. These dots not only give words a special appearance, but also significantly affect their sound and meaning.
Examples of umlauts in German include the words:
"Mädchen" (girl) - without an umlaut, the word would sound like "Mädchen" (boy). The umlaut changes the pronunciation of the vowel "a" to a more forward and more rounded pronunciation, which distinguishes the word "Mädchen" from "Mädchen".
"Hören" (listen) - here the umlaut changes the pronunciation of the vowel "o" to more rounded, making the sound of the word "Hören" different from "Horen" (hooves).
"Grün" (green) - the umlaut changes the pronunciation of the vowel "u", making it more forward and rounded. Without the umlaut, the word sounds like "Grun" (born).
Umlauts in German are not only used to change the sound of words, but can also be important for understanding the context.