Questions & Answers about Złoto jest droższe niż srebro.
Why is it droższe and not droższy?
Droższe is the comparative form (meaning more expensive) of the adjective drogi. It has the -e ending here because it must match the neuter noun it describes, which is złoto (gold). If you were talking about a masculine noun like a phone (telefon), you would use droższy instead.
Does the word niż change the case of the noun that comes after it?
No, it doesn't! When you use niż (than) for comparisons, the second item stays in the exact same case as the first item. Since złoto is the subject of the sentence and is in the Nominative case, srebro also stays in the Nominative case.
Can I use od instead of niż in this sentence?
Yes, you can, but it changes the grammar. You could say Złoto jest droższe od srebra. Remember that if you use od (than/from), the noun that follows must change to the Genitive case (srebra). Using niż is often easier for beginners because you don't have to change the case of the second noun at all.
Why does the 'g' in drogi change to 'ższ' in droższe?