Existential Clauses with Mass Nouns
In Finnish, when you want to state that something exists in a particular place (like saying "There is..." or "There are..." in English), you use an existential clause. These sentences typically follow a specific word order:
Location + on + Subject
When describing an undefined amount of an uncountable substance, material, or ingredient (a mass noun), the subject must be in the partitive singular case. Notice that the verb is always on (is), in the third-person singular.
If there are multiple ingredients, the verb remains on. Any adjectives describing the mass noun must also match it in the partitive case.
Plural Subjects in Existential Clauses
When you want to express the existence of an undefined number of countable things (like "some cookies" or "cinnamon rolls"), you use the partitive plural.
The most important rule for Finnish existential clauses is that the verb remains strictly singular (on), even when the subject is plural. You must never use the plural verb ovat in this structure.
To turn an existential clause into a yes/no question, start the sentence with onko (is there / are there), followed by the location, and then the partitive subject.