When introducing others in German, there are a few helpful phrases. If you want to introduce a friend, you can say, "Das ist mein Freund [name]" (This is my friend [name]). If you're introducing a family member, use "Das ist meine Mutter" (This is my mother) or "Das ist mein Bruder" (This is my brother). Remember, the context of the introduction in German should always guide your language choice, especially regarding formality and the relationship between you and the person being introduced.