warnen vor + Dativ
to warn about
The verb warnen vor (to warn about) always goes with the preposition vor, and here vor takes the Dativ (dative). The preposition vor can take the Akkusativ or the Dativ — with warnen it is the Dativ, so learn the case together with the verb. The article follows the case: der Sturm → vor dem Sturm. For a thing you replace the whole phrase with davor; for a person you keep the preposition and use a pronoun: vor ihm. You ask “Wovor warnt der Wetterdienst?” about a thing and “Vor wem hast du mich gewarnt?” about a person.
At a glance
| Case | Dativ |
|---|---|
| Preposition + article | vor dem (masculine)vor der (feminine)vor dem (neuter)vor den …-n (plural) |
| Thing → da-word | davor |
| Question about a thing | Wovor …? |
| Person → pronoun | vor ihm · vor ihr · vor ihnen (pl) |
| Question about a person | Vor wem …? |
Example sentences
- Die Polizei warnt vor den Betrügern.
- Der Wetterdienst warnt vor dem Sturm.
- Ich habe dich vor dem Hund gewarnt!
- Experten warnen vor den Folgen.
- Die Polizei warnt vor den Taschendieben.
- Der Wetterdienst warnt vor der Hitze.
- Ich habe dich vor dem Chef gewarnt!
- Experten warnen vor dem Klimawandel.
Replacing the phrase: davor or a pronoun
Thing
Der Wetterdienst warnt vor dem Sturm.
Der Wetterdienst warnt davor.
Question: Wovor warnt der Wetterdienst?
Person
Ich habe dich vor dem Hund gewarnt!
Ich habe dich vor ihm gewarnt!
Question: Vor wem hast du mich gewarnt?
Typical mistake
Learners often use über here. With warnen in this meaning the preposition is vor + Dativ: Der Wetterdienst warnt vor dem Sturm.
Drill warnen vor until it sticks
The free preposition trainer asks for the preposition with its article in real sentences, then the da-word and the question word. Verbs you miss come back a few tasks later in a different sentence.
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