Questions & Answers about Tämä talo on keltainen.
Why is keltainen in its basic form here, and not in the partitive case?
In Finnish, when you describe a single, countable object (like a house, talo), the describing word stays in the basic form (nominative). You only use the partitive case for describing uncountable things (like water or coffee) or plurals. So, while "The coffee is black" uses the partitive (Kahvi on mustaa), "The house is yellow" uses the basic form (Talo on keltainen).
The word keltainen ends in -nen. Is this a special type of word?
Yes! A very common rule in Finnish is that words ending in -nen change that ending to -se- before you add any grammatical endings. For example, if you wanted to say "in the yellow house", keltainen would use its -se- stem, becoming keltaisessa talossa.
If I wanted to say "These houses are yellow", how would tämä change?
In Finnish, pointing words (like "this") and adjectives have to match the noun they are describing. The plural of "this" (tämä) is "these" (nämä). If you make the sentence plural, everything must match: Nämä talot ovat keltaiset (These houses are yellow).
The word order here is exactly like English. Can I mix the words around in Finnish?
You can, but it changes the emphasis. The default, neutral word order in Finnish is Subject-Verb-Adjective, just like in English (Tämä talo on keltainen). If you changed the order to Keltainen tämä talo on, it would emphasize the color, sounding more like "Yellow is what this house is." For basic statements, sticking to the English-like order is perfect.