🇬🇧🇨🇳 gas - 气体 : English Lesson

Meaning of "gas" ("气体"), detailed definition, and a short video lesson below.

Gas is a kind of matter, like air, that usually you can’t see. It spreads out to fill any space it’s in, like inside a balloon or all around a room, and it doesn’t keep a fixed shape like a solid or a liquid.

Watch and listen to this English flashcard to understand the word in more detail, with an easy example sentence.

The science teacher said, "This gas is harmless," right before it made our hair stand up like we were in a rock band.

The dragon didn’t breathe fire this time—just a huge puff of smoke gas that smelled like burnt marshmallows.

I blew up my balloon so big with gas that it looked like it was about to float to the moon.

The air inside my bike tire is a kind of gas that keeps the wheel puffy, unlike my brain on Monday mornings.

We put dry ice in water and watched spooky gas crawl across the table like a slow ghost.

A man fills a red balloon with gas at the park. The gas makes the balloon big. A child feels the gas in the balloon, but she cannot see the gas. A small puff of gas comes from the pump and goes up. The child laughs and lets the balloon go; the gas helps it float.

This word is at the A2 level, which means it’s useful for simple, everyday situations. You might use it when shopping, traveling, or talking about your hobbies. Words at this level help you build confidence in practical, routine conversations.

Expanding your English vocabulary is one of the best ways to improve your pronunciation, spelling, and confidence in English. Watch the video above to memorize the word, understand its meaning, and see example sentences in action. Discover related words to grow your vocabulary naturally. Add words to your playlist for stress-free, effective learning—anytime, anywhere! Watch, learn, repeat.