Breakdown of Osaan jo tehdä vaarallisen kierteen.
tehdä
to do
osata
to know how to
jo
already
vaarallinen
dangerous
Questions & Answers about Osaan jo tehdä vaarallisen kierteen.
Why is the object vaarallisen kierteen in the genitive-like accusative case ending in -n?
In a verb chain like osaan tehdä (I can do), the main conjugated verb (osaan) determines the case of the object. Because osaan is an active verb with a clear subject (the "I" indicated by the -n ending), the total object takes the standard -n ending. If the main verb didn't have a subject, such as in a passive or imperative sentence, the object would drop the -n and look like the nominative.
Why is the second verb tehdä in its basic dictionary form?
The verb osata (to know how to / to be able to) always links directly to a first infinitive, which is the basic dictionary form. When you chain verbs in Finnish, the first verb dictates the form of the second. Contrast this with a verb like oppia (to learn), which would require the third infinitive instead (for example, opin tekemään).
What is the dictionary form of kierteen, and why does its stem change so much?
The dictionary form is kierre (a spin or twist). It belongs to the group of words ending in -e. To find the stem for these words, you double the final vowel. However, this word also undergoes reverse consonant gradation: the weak -rr- in the dictionary form becomes a strong -rt- in the stem. This gives the strong stem kiertee-, to which we add the -n object marker to get kierteen.
Why is the adverb jo placed between the two verbs rather than at the end of the sentence?