Breakdown of Tämä kokemus oli huono, koska bussi ajaa hyvin hitaasti.
tämä
this
olla
to be
koska
because
huono
bad
Questions & Answers about Tämä kokemus oli huono, koska bussi ajaa hyvin hitaasti.
How do we form the adverb hitaasti (slowly) from the adjective hidas (slow)?
We add the adverb suffix -sti to the inflectional stem of the word, not the basic dictionary form. The stem of hidas is hitaa-, so adding -sti gives us hitaasti.
Doesn't hyvin mean well? Why does the translation say very?
You are right that hyvin is the adverb form of hyvä (good), meaning well. However, Finnish also uses hyvin as a common way to say very when it comes right before another adjective or adverb, just like in hyvin hitaasti (very slowly).
Why does the noun kokemus end in -us? Is it a special ending?
Yes, -us or -ys is a common ending used to turn verbs into nouns. Kokemus (experience) comes from the verb kokea (to experience). Here it is the subject of the sentence, so it remains in its basic dictionary form.
Why does the sentence use the past tense oli (was) but then switch to the present tense ajaa (drives)?
This works just like in English. The speaker is talking about a specific experience they had in the past (oli), but they are stating a general, ongoing fact about how that bus operates (ajaa).