To conjugate regular verbs, this is removed and replaced with alternative endings: Radical: mach- In general, irregular forms of German verbs exist to make for easier and clearer pronunciation, with a vowel sound in the centre of the word the only part of the word that changes in an unexpected way (though endings may also be slightly different).
However, a number of verbs including sein (to be) are fully irregular, as in English I am and I was sound completely different.
This is similar to English grammar, though the primary verb is normally placed at the end of the clause.
In German, the first-person and third-person plural and second-person plural-polite forms are identical for all verbs in every tense.
Certain verbs change their stem vowel for the second-person and third-person singular forms.
These usually follow one of three patterns: Certain verbs change their stem vowels for the preterite indicative and subjunctive.
In modal verbs, the stem vowel will change for all conjugations of the singular simple present.
In addition, the ending will be missing for the first and third person conjugations of the singular simple present.
In German, prepositions and modifying prefixes are frequently attached to verbs to alter their meaning.