sich vortun/nicht vortun
Irregular conjugation for the verb "tun" and its compounds: there is a vowel change in the stem of Present tense ("ich tue"), the stem of Preterite ("ich tat") and the stem of Past Participle ("getan").
The verb has several variants of conjugation, which may correspond to different meanings. Please use the menu to select one or all variants.
zu + Infinitiv