Questions & Answers about Inga bilar är parkerade här.
Why does the past participle parkerade end in -ade here?
Past participles work just like adjectives when they follow the verb är (to be). Because bilar (cars) is plural, the past participle needs the plural ending. For Group 1 verbs like parkera, the plural past participle ending is always -ade. If we were talking about a single car, it would be parkerad.
How do we know parkera is a Group 1 verb for its participle endings?
You can tell it belongs to Group 1 because its stem ends in an -a (the present tense is parkerar). All Group 1 verbs build their past participles using the exact same pattern: -ad for singular en-words, -at for singular ett-words, and -ade for plurals.
Why do we use Inga instead of Ingen?
The word for "no" or "not any" has to match the noun it describes. Since bilar is plural, we must use the plural form inga. If the sentence were about a single car, it would use the en-word form: Ingen bil är parkerad här.
Why is the noun bilar in the indefinite form instead of the definite form (bilarna)?
In Swedish, words that mean "no" or "none" (like ingen, inget, and inga) are always followed by the indefinite form of the noun. You are talking about cars in general, not a specific group of cars.