Usages of kāi
我 先 开 灯， 再 看 书。wǒ xiān kāi dēng, zài kàn shū.
I will turn on the light first, then read.
她 把 灯 开 了， 我 就 看 书。tā bǎ dēng kāi le, wǒ jiù kàn shū.
She turned on the light, and then I read.
我 一 回家 就 开 电视 看 电影。Wǒ yì huíjiā jiù kāi diànshì kàn diànyǐng.
As soon as I get home, I turn on the TV and watch a movie.
她 说 自己 睡觉 的 时候 喜欢 开着 空调， 不 是 因为 外面 很 热， 而是 因为 这样 比较 安心。tā shuō zìjǐ shuìjiào de shíhou xǐhuan kāizhe kōngtiáo, bú shì yīnwèi wàimiàn hěn rè, érshì yīnwèi zhèyàng bǐjiào ānxīn.
She says that when she sleeps she likes to leave the air conditioner on not because it’s hot outside, but because that way she feels more at ease.
冬天 的 时候， 父母 开 着 暖气 在 家 看 电视， 知道 孩子 安静 地 在 房间 里 学习， 也 觉得 很 安心。dōngtiān de shíhou, fùmǔ kāi zhe nuǎnqì zài jiā kàn diànshì, zhīdào háizi ānjìng de zài fángjiān lǐ xuéxí, yě juéde hěn ānxīn.
In winter, the parents have the heating on and watch TV at home; knowing the children are quietly studying in their rooms, they also feel very at ease.
夏天 的 晚上， 公园 里 很 多 人 不 想 一直 在 开 着 空调 的 房间 里， 而是 想 出来 散步。xiàtiān de wǎnshang, gōngyuán lǐ hěn duō rén bù xiǎng yìzhí zài kāi zhe kōngtiáo de fángjiān lǐ, érshì xiǎng chūlái sànbù.
On summer evenings, many people in the park don’t want to stay in air‑conditioned rooms; instead, they want to come out for a walk.
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