We use wo to ask where someone is. We use wohin to ask where someone is going (direction away from the speaker). And we use woher to ask where someone is coming from (direction toward the speaker). -Wo bist du? -In Wien.

The following examples are some basic questions that can be asked in German. In each sentence, the main verb begins the subject and is immediately followed by the subject: Willst du ins Museum gehen? (Do you want to go to the museum?) Wird jemand, den ich kenne, dort sein? (Will someone I know be there?)

Wohin. German has two question words for asking "where." One is wo? and is used when asking the location of someone or something. The other is wohin? and this is used when asking about motion or direction, as in "where to."

Welcher (which) can be used before another word or as a substitute for another word. As a substitute it refers to a noun that has already been mentioned. Welche Personen arbeiten hier?