Questions & Answers about Haluatko sinä uuden viltin ja kynttilät?
Why is "a new blanket" uuden viltin instead of uutta vilttiä?
The verb haluta (to want) takes a "total object" when you want one whole, specific thing. For a single item, the total object uses the genitive case (ending in -n). If you were asking if someone wanted "some blanket" generally, you would use the partitive case uutta vilttiä.
Why is "the candles" in the -t plural form (kynttilät) instead of the partitive plural (kynttilöitä)?
Just like the blanket, the candles are a total object, meaning you want specific, defined candles (notice the English translation says "the candles"). When a total object is plural, it takes the standard nominative -t plural form. If you were asking for an undefined amount ("some candles"), you would use the partitive plural kynttilöitä.
How do you get the word uuden from the dictionary form uusi (new)?
The adjective uusi belongs to a special group of words ending in -si. When adding an ending like the genitive -n, the -si changes to a -te- stem. Because the syllable becomes closed by the -n, consonant gradation kicks in and softens the t to a d, creating the stem uude-. Adding the -n gives us uuden.
Could I leave out the word sinä in this sentence?