Questions & Answers about A los niños les gustan los juguetes nuevos.
Why does the verb gustan end in an 'n' here?
Why do we need both a los niños and les? Don't they both refer to the children?
Why is there a los before juguetes? In English we just say "new toys," not "the new toys."
In Spanish, when you talk about things you like or dislike as a general category, you always need the definite article (el, la, los, or las). Because toys are a masculine and plural noun, we use los.
Just a quick refresher: why is it juguetes nuevos instead of nuevos juguetes?