Word
Le regole, le quali riducono la velocità, sono fondamentali.
Meaning
The rules, which reduce the speed, are fundamental.
Part of speech
sentence
Pronunciation
Course
Breakdown of Le regole, le quali riducono la velocità, sono fondamentali.
essere
to be
la regola
the rule
la velocità
the speed
il quale
who, which, whom (also la quale, i quali, le quali)
Questions & Answers about Le regole, le quali riducono la velocità, sono fondamentali.
Why use le quali here instead of the simpler che?
Both are grammatically correct and mean 'which' as a subject. However, le quali is a more formal, stylistic choice often used in writing. Because it changes to match the gender and number of the noun it replaces (feminine plural le regole), it is also great for avoiding ambiguity in complex sentences, even though che would work perfectly fine here.
Could I use cui instead of le quali in this sentence?
No. Cui is only used after a preposition (like di cui or a cui) to mean things like 'of which' or 'to which'. In this sentence, the relative pronoun is doing the action of reducing, which means it is the subject. For subjects, you can only use che or a form of il quale.
Le regole is feminine plural, so why does the adjective fondamentali end in -i instead of -e?
Adjectives that end in -e in their singular form (like fondamentale) have only one plural ending for both masculine and feminine nouns, which is -i. They don't follow the typical -o and -a patterns.
What is the infinitive of riducono?