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Questions & Answers about Il vetro è trasparente.
How do I use vetro to say something is made of glass, like "a glass window"?
In English, we often use materials as adjectives (like "glass window"). In Italian, you use the preposition di (meaning of) plus the noun for the material. So, a glass window is una finestra di vetro (literally "a window of glass").
Why does the Italian sentence say Il vetro when the English translation is just "Glass"?
In Italian, you almost always need a definite article (il, la, etc.) when talking about a general category, concept, or material. While in English we just say "Glass is transparent" for the general fact, Italian requires the article: Il vetro è trasparente.
Since vetro is a masculine noun, shouldn't the adjective be trasparento?
If vetro means glass, can I use it to ask for "a glass of water"?