Breakdown of Der Teppich gehört sofort gestaubsaugt.
sofort
immediately
der Teppich
the carpet / the rug
gehören
to need to be (done)
staubsaugen
to vacuum
Questions & Answers about Der Teppich gehört sofort gestaubsaugt.
How does gehören work in this sentence to mean "needs to be"?
Using gehören + a past participle (here, gestaubsaugt) is a passive alternative that expresses strong necessity or obligation. It means exactly the same thing as the modal passive construction Der Teppich muss sofort gestaubsaugt werden, but it is more colloquial and very common in everyday spoken German (especially in southern Germany and Austria).
How can I tell when gehören means "needs to be" rather than "belongs to"?
Look at the end of the clause! If gehören means "to belong to," it is usually paired with a dative object (e.g., Der Teppich gehört mir - The carpet belongs to me). When it is used alongside a past participle at the end of the sentence, it triggers this "necessity passive" meaning instead.
Why is the past participle gestaubsaugt? Shouldn't it be a separable verb, making it staubgesaugt?
You would naturally think so, since it's formed from a noun (Staub) and a verb (saugen). However, staubsaugen is treated as an inseparable, weak verb in standard modern German. Because it is inseparable, the ge- prefix goes at the very beginning of the word, resulting in gestaubsaugt.
Do I ever need to add zu when using gehören as a passive alternative?
No, gehören pairs directly with the past participle without any extra words. You might be thinking of a different passive alternative using sein, which does require zu + an infinitive to express necessity (e.g., Der Teppich ist sofort zu staubsaugen).
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