Questions & Answers about Die Helferin ist freundlich.
The ending -in usually marks a female person in many professions or roles.
- Helfer = male helper
- Helferin = female helper
So Die Helferin specifically refers to a female helper. If you wanted a male helper, you would say Der Helfer.
German has grammatical gender. Every noun is either masculine (der), feminine (die), or neuter (das) in the singular.
- Helferin is a feminine noun, so its nominative singular article is die.
- Helfer (the masculine version) would use der in the nominative singular: Der Helfer ist freundlich.
In this sentence, Die Helferin is the subject (nominative case), so you see the basic dictionary form of the article.