Questions & Answers about He kamppailevat, mutta sopeutuvat metsään.
Why is the word for forest in the illative case (metsään) here?
This is due to verb rection, which is the main topic of this lesson. The verb sopeutua (to adapt) requires the thing being adapted to to be in the illative case. You can think of it as adapting 'into' a new environment (sopeutua metsään).
Does the -tua ending in sopeutuvat tell us something about how the verb works?
Yes! The -tua ending usually marks an automative or reflexive verb, meaning the action happens to the subject without an external actor. While sopeuttaa means to adapt something else, sopeutua means to adapt oneself.
Can I leave out the pronoun He and just say Kamppailevat, mutta sopeutuvat metsään?
In standard written Finnish, no. Unlike the first and second persons (I, you, we, you all) where the verb ending is enough, third-person pronouns (hän, he) must always be included. In casual spoken Finnish, you would typically use ne instead of he.
The verb kamppailevat comes from kamppailla. Why does it get an extra -e- before the personal ending?