How 'zu' marks the new role in 'zum Präsidenten wählen'
In English you simply say that someone was elected president, promoted manager or made a hero. The new role follows the verb directly, with no preposition. German does not work like that. When a verb gives someone a new rank, role or status, the result is introduced with zu + dative: jemanden zum Präsidenten wählen, jemanden zur Direktorin ernennen.
This catches English speakers in two ways. Either they leave the preposition out completely (sie wählten ihn Präsident), or they reach for als because it looks like English "as". Verbs like wählen, befördern, ernennen, berufen, machen and erziehen all want zu.
The pattern is always the same: jemanden (the person, in the accusative) + zu + the new role (in the dative) + the verb. Because zu takes the dative, it usually merges with the article: zu dem becomes zum, and zu der becomes zur. English has no article here at all, so remember that German uses one, hidden inside zum or zur.
Watch the noun ending too. Some masculine nouns add -en in the dative, so you get zum Präsidenten and zum Helden, not zum Präsident.
A useful way to think about it: zu points to where the person ends up. Before the vote she was a member, afterwards she is the president. Zu marks that end point.
wählen means "to elect" when it has a zu phrase. Without one, it just means "to vote for" or "to choose": Ich habe die Grünen gewählt (I voted for the Greens).
ernennen and berufen both mean "to appoint". Ernennen is the everyday official word. Berufen sounds more formal and is typical for top posts, committees and professorships.
befördern is the one case where English also uses a preposition ("promoted to"), so it is a good anchor to remember the whole group.
machen takes zu when the result is a noun: jemanden zum Chef machen (to make someone the boss).
erziehen works the same way when you say what kind of person the upbringing produces.
krönen follows the pattern as well: jemanden zum König krönen (to crown someone king).
With machen, the preposition only appears before a noun. An adjective follows directly, just like in English.
Als describes the capacity in which someone already acts: Sie arbeitet als Ärztin (She works as a doctor). You will sometimes hear als with election or appointment verbs, especially in the passive, but zu is the standard and safe choice whenever someone receives a new role.
berufen can also take a place, for example an eine Universität berufen (to be appointed to a university). The zu phrase is for the role itself.
A related use of zu marks a result that is not a role: Das Gericht verurteilte ihn zu einer Geldstrafe (The court sentenced him to a fine). Same preposition, same idea of an end point.
When a verb gives someone a new role, rank or status, put the result after zu + dative, usually as zum or zur: jemanden zum Präsidenten wählen, zur Direktorin ernennen, zum Helden machen. Never leave the preposition out, and keep als for the role someone already has, not the one they are given.







