Verified answer

昨晚 十 点 你 给 我 打电话 吗？

小时 means "hours", what you said is "10 hours"

for "o'clock" the word 点 (点钟) is used

Hi, I’m Jennifer, an online Chinese teacher from Beijing China.

In Chinese,“小时”refers to a period of time, not a specific time. So “十小时” doesn’t mean ten o’clock, it means ten hours. Here you should say你昨天晚上十点钟给我打电话了吗？

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