Usages of kèběn
今天 上课 的 时候， 请 把 课本 放 在 桌子 上， 先 看 黑板， 再 做 笔记。jīntiān shàngkè de shíhou, qǐng bǎ kèběn fàng zài zhuōzi shàng, xiān kàn hēibǎn, zài zuò bǐjì.
During class today, please put the textbook on the desk, look at the blackboard first, and then take notes.
我 忘记 把 课本 带 到 教室 了， 只好 回 宿舍 去 拿。wǒ wàngjì bǎ kèběn dài dào jiàoshì le, zhǐhǎo huí sùshè qù ná.
I forgot to bring the textbook to the classroom, so I had no choice but to go back to the dorm to get it.
你 的 课本 在 我 的 桌子 上面， 你 看见 了 吗？nǐ de kèběn zài wǒ de zhuōzi shàngmian, nǐ kànjiàn le ma?
Your textbook is on my desk; did you see it?
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