基本规则
在英语中,表示具体某一天(包括星期几)时,通常使用介词 “on”。
- on Monday
- on Tuesday
- on Wednesday
- on Thursday
- on Friday
- on Saturday
- on Sunday
常见例句
- I have a meeting on Monday.
- She usually goes to the gym on Wednesday.
- We’ll visit them on Sunday afternoon.
- The store is closed on Tuesdays. (泛指每个周二)
注意事项
✅ 使用 “on” 是因为星期几代表的是具体的某一天(属于“日期”范畴)。
❌ 不要误用 “in” 或 “at”:
- 错误:~~in Monday~~
- 错误:~~at Monday~~
💡 对比记忆:
- in + 年/月/季节(如 in 2025, in July, in summer)
- on + 具体日期/星期(如 on July 5th, on Friday)
- at + 具体时间点(如 at 3 p.m., at noon)