Usages of kāi
周末 我 和 她 骑 自行车， 不 开 车。zhōumò wǒ hé tā qí zìxíngchē, bù kāi chē.
On weekends she and I ride bicycles and don't drive.
今天 我 不 开 车， 我 坐 地铁。jīntiān wǒ bù kāi chē, wǒ zuò dìtiě.
I'm not driving today; I'm taking the subway.
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