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“时间介词:at、in、on”

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  • 早上该说 in the morning 还是 on the morning?星期几用 on,年份却用 in——时间介词看似简单,细节很容易搞混。
  • at 用于精确的时间点(几点几分)、用餐时段和几个固定短语(at night、at Christmas、at weekends)。
  • in 用于较长的时间段——一天中的时段、月份、季节、年份、年代、世纪;on 用于星期几和具体日期。
  • at night 和 in the night 意思不同:前者指整晚的性质(比如上夜班),后者指深夜某个时间点(比如婴儿夜里醒来)。

重点内容


at — 精确时间点

用于时刻、用餐时间,以及几个固定短语。

用于例子
时钟时间at 6 o'clock / at 9.30 / at 13.00
用餐时间at breakfast time / at lunchtime / at dinner time
固定短语at night / at weekends / at Christmas / at Easter
  • I get up at 6.30 a.m. 我早上 6:30 起床。
  • She works at night. 她晚上上班。
  • At Christmas, we visit our relatives. 圣诞节我们去探亲。

📌 at night vs in the night:

  • at night = 整个晚上(She works at night. 她上夜班。)
  • in the night = 深夜的某个时间段(The baby woke up in the night. 婴儿在深夜醒了。)

in — 较长的时间段

用于一天的时段、月份、季节、年份、年代、世纪。

用于例子
一天的时段in the morning / in the afternoon / in the evening
月份in January / in December
季节in (the) spring / summer / autumn / winter
年份、年代、世纪in 2025 / in the 80s / in the 21st century
其他in the past / in the future / in the last few weeks
  • I usually relax in the evening. 我通常在傍晚放松。
  • In summer, it's too hot here. 夏天这里太热了。
  • She was born in 1998. 她 1998 年出生。

on — 特定的某天、某日期

用于星期几、特定日期、节日(单日)。

用于例子
星期on Monday / on Friday
日期on 30 July / on the second of August
特定的日子on my birthday / on New Year's Day
  • On Fridays, I have a long lunch. 每个星期五我会吃顿长午餐。
  • His birthday is on 19 October. 他的生日是 10 月 19 日。

快速对比

介词用于例子
at时刻、用餐时间、固定短语at 5pm, at lunchtime, at night
in时段、月份、季节、年份in the morning, in March, in 2020
on星期、日期on Tuesday, on 1 January

例句练习

  1. The meeting is at 3 o'clock on Tuesday.
    会议在星期二下午三点。
  1. I was born in September, in 1995.
    我生于 1995 年 9 月。
  1. In the evening, I usually watch TV or read.
    傍晚我通常看电视或阅读。
  1. The shop is closed at Christmas.
    圣诞节期间这家店关门。
  1. We have a holiday on New Year's Day.
    新年那天我们放假。

常见错误

❌ I'll see you in Monday. ✅ I'll see you on Monday.

❌ She wakes up on 7 o'clock. ✅ She wakes up at 7 o'clock.

❌ He was born on 1990. ✅ He was born in 1990. (年份用 in)

❌ We went in Christmas. ✅ We went at Christmas. (节日假期用 at)

Sources

Blog / Website:

  1. Prepositions of time: 'at', 'in', 'on' – British Council LearnEnglish
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