Narrate a new experience: perfect tense with 'haben'

The German alphabet has 26 standard letters, like English, and four additional characters [ä], [ö], [ü] and ß. The umlaut letters [ä], [ö], [ü] sound very different from [a], [o] and [u] and require practice. Sentence building is the process of creating meaningful sentences using knowledge of both vocabulary and grammar. The perfect tense with most verbs uses the present tense of the verb ‘haben’ together with a past participle. For strong past participles, ge- and –en sandwich the stem; the stem may have a vowel change, too.