Breakdown of Kun sinulla on vapaapäivä, sinun ei tarvitse stressata.
olla
to be
sinä
you
ei
no / not (en, et, ei, emme, ette, eivät)
tarvita
to need
Questions & Answers about Kun sinulla on vapaapäivä, sinun ei tarvitse stressata.
Why does the sentence use sinun ei tarvitse instead of sinä et tarvitse?
This is the special Finnish structure for necessity and non-necessity. When expressing that someone doesn't need to do something, the person doing the action goes into the genitive case (sinun). The verb itself is locked into the third-person singular (ei tarvitse), no matter who the subject is.
Why do we use sinulla in the first half of the sentence but sinun in the second half?
Even though both mean "you" in English, Finnish uses different structures for these two concepts. "You have" requires the "to have" structure using the adessive case (sinulla on). "You don't need to" requires the necessity structure, which uses the genitive case (sinun ei tarvitse).
Why is the verb stressata in its dictionary form here?
In the necessity structure, the main action verb that follows ei tarvitse must always be in the 1st infinitive (the dictionary form). You don't conjugate it. It works exactly the same way as the positive necessity verb täytyy, e.g., sinun täytyy stressata (you must stress).
Is vapaapäivä a common way to say "day off"?
Yes! It is a very common compound word made of vapaa (free) and päivä (day). It translates perfectly to "day off" when talking about work or school.