“Glass” is a hard, clear material that people use to make windows, bottles, cups, and many other everyday objects. It lets light pass through, so we can see through it.
People use glass all the time in daily life, especially in homes, offices, cars, and shops. For example, a window is made of glass, and many drinks are served in a glass cup or bottle. It is useful because it is strong, smooth, and transparent.
Meaning & Usage
Glass can mean the material itself, or an object made from that material. In everyday English, people usually mean the material when they say “glass.”
Examples
1. The window is made of glass.
2. She drank water from a glass.
3. The shop door has a glass panel.
What is glass made of?
Glass is usually made from sand and other materials that are heated until they melt and then become hard when cooled.
Why is glass used so often?
People use glass because it is clear, useful, and easy to shape into many different things.
Is a “glass” the same as “glass”?
Not always. “Glass” can mean the material, while “a glass” often means a drinking cup made of glass.
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