He's a spoilt brat and it's about time he learnt to behave properly.

他是个被宠坏的孩子，是该学些规矩了。

柯林斯例句

She will have to learn to behave properly.

她要懂得检点些.

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Can't you control that child ( ie make it behave properly )?

你管不了那个孩子 吗 ?

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It's easy to debug, and when something doesn't behave properly, it's easy to troubleshoot.

这样比较容易调试, 如果有些地方工作不正常, 也比较容易排查故障.

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