This part considers the German verb, its regular and irregular conjugations, and its position in a sentence. Like English verbs, the ending of the verb in German changes with the subject. As a general rule and a reminder: The German verb consists of an infinitive, which is a stem and an -en ending — for example, schreiben, lernen, and öffnen. There are regular verbs, such as the three just mentioned, and then there are irregular verbs.