Questions & Answers about Według tej prognozy jutro będzie gorsza pogoda.
How does the word według change the ending of ta prognoza?
The preposition według (according to) always requires the Genitive case. Since prognoza is a feminine noun, its Genitive ending is -y, becoming prognozy. The pronoun ta (this) also changes to its feminine Genitive form, tej.
Why is the word for "worse" gorsza here instead of gorzej?
Gorsza is an adjective describing the feminine noun pogoda (weather), so it has to match it. If you dropped the noun and just wanted to say "it will be worse tomorrow", you would use the adverb form gorzej, as in: jutro będzie gorzej.
What is the base form of the adjective gorsza?
The base form is zły (bad). Polish has a few irregular comparative adjectives, and zły changes completely to become gorszy (worse). Because pogoda is a feminine noun, we use the feminine form gorsza.
Can I change the word order and put według tej prognozy at the end?
Yes, you could say: Jutro będzie gorsza pogoda według tej prognozy. However, putting według at the beginning is much more natural when you are setting the context for the rest of the sentence, just like starting with "According to..." in English.