Questions & Answers about He rakennuttavat uuden talon metsään.
How is the verb rakennuttavat formed to mean "are having built"?
The basic verb is rakentaa (to build). To express that you are commissioning someone else to do the building, you use the weak consonant stem rakenn- and add the curative suffix -uttaa, forming rakennuttaa. Then, you add the third-person plural ending -vat to match the subject he.
Why is the object uuden talon in the accusative case instead of the partitive?
The object takes the accusative case (which ends in -n for singular nouns, looking identical to the genitive) because the action aims for a complete, finished result. They intend to have a whole, finished house built. If the sentence used the partitive uutta taloa, it would emphasize the ongoing construction process itself rather than the finished product.
Why use the illative case metsään (into the forest) instead of the inessive metsässä (in the forest)?
In Finnish, verbs related to building, establishing, or leaving something somewhere often require a location case that indicates movement towards or into a place. Conceptually, you are building the house into the forest (metsään), making it appear where it wasn't before, rather than just performing the action of building while inside the forest (metsässä).