Breakdown of Poika laittaa ostoksia kassiin.
poika
boy
laittaa
to put
ostos
purchase
kassi
bag (soft, shopping)
Questions & Answers about Poika laittaa ostoksia kassiin.
Why is the word ostoksia in the partitive plural here?
Because it is the object of the sentence and represents an unspecified amount of things. The boy is putting some purchases in the bag, rather than specific ones. When you have an unspecified plural object, you must use the partitive plural.
How do we build the partitive plural ostoksia from the basic word ostos?
Words ending in -os change their -s to -kse- to make the stem, so ostos becomes ostokse-. To make the partitive plural, we add the plural -i- and the partitive -a. The e before the i drops out, giving us the plural stem ostoksi-. Add the -a and you get ostoksia.
Why do we use kassiin (into the bag) instead of kassissa (in the bag)?
The verb laittaa (to put) expresses movement towards a destination. In Finnish, you must use a destination case like the illative (-iin, meaning into) when putting things somewhere. You are moving the purchases into the bag (kassiin), not doing the putting action while already sitting inside the bag (kassissa).
Does the verb laittaa only mean to put?
It is the most common word for putting or placing things, but it is a very flexible verb! You will also frequently see it used for preparing food (like laittaa ruokaa) or getting things ready.
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