暑假 + 的时候 / 在 + 暑假
暑假 (shǔjià) is a noun meaning "summer vacation" or "summer break." It specifically refers to the school holiday period during summer. It is commonly used when talking about activities, travel, or plans during the summer break.
暑假你打算去哪里玩?
Shǔjià nǐ dǎsuàn qù nǎlǐ wán?
Where do you plan to go for fun during summer break?
孩子们都盼着暑假快点到来。
Háizimen dōu pànzhe shǔjià kuài diǎn dàolái.
The children are all looking forward to summer break coming soon.
我暑假在一家咖啡店打工。
Wǒ shǔjià zài yì jiā kāfēi diàn dǎgōng.
I worked part-time at a coffee shop during summer break.