German A1: Verben mit Vokalwechsel (verbs with vowel change). These common verbs change their stem vowel in the du and er/sie/es forms — for example, lesen becomes du liest, er liest. The change only affects the second and third person singular; the plural forms follow the regular pattern.

Type the correct conjugated form of the verb shown in each section header.

lesen (e → ie)

sprechen (e → i)

laufen (a → ä)

waschen (a → ä)

helfen (e → i)

treffen (e → i)

How do vowel-changing verbs work in German?

In German, many strong verbs change their stem vowel in the du and er/sie/es forms of the present tense. The pattern does not affect ich, wir, ihr, or sie (plural).

Vowel-change patterns

Pattern Examples
e → i sprechen → du sprichst, er spricht
helfen → du hilfst, er hilft
treffen → du triffst, er trifft
e → ie lesen → du liest, er liest
a → ä waschen → du wäschst, er wäscht
laufen → du läufst, er läuft

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