Usages of guāndiào
为了 节省 能源， 学校 晚上 十 点 以后 关 掉 很多 灯。wèile jiéshěng néngyuán, xuéxiào wǎnshang shí diǎn yǐhòu guān diào hěnduō dēng.
To save energy, the school turns off many lights after ten o’clock at night.
下班 以后 请 把 电脑 关掉。xiàbān yǐhòu qǐng bǎ diànnǎo guāndiào.
After work, please turn off the computer.
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