Elon.io is an online learning platform
We have an entire course teaching Finnish grammar and vocabulary.
Questions & Answers about Sää vaikuttaa aikatauluun.
Why is sää written as it is and in this case?
sää is the nominative singular form of “weather,” used for the subject of the sentence. Finnish marks the subject with the nominative case, so you don’t add any endings beyond the basic word.
What person and number is vaikuttaa, and how is it formed?
vaikuttaa is the third-person singular present tense of the verb vaikuttaa (type 1). The ending -a (or -ä) signals “he/she/it affects.”
What case is aikatauluun in, and why is it used here?
aikatauluun is the illative singular of aikataulu (schedule). The illative answers “into what?” (mihin?) and is required by vaikuttaa when indicating what is being affected.
How do you form the illative singular for a noun like aikataulu?
For nouns ending in a vowel, you add -un to the nominative:
aikataulu → aikatauluun
Notice the long vowel uu remains.
Why are there no articles (“a” or “the”) before sää or aikatauluun?
Finnish does not use articles. Definiteness or indefiniteness is inferred from context or added words, but no separate word like “a” or “the” appears.