Cool MateAt 对比 On 对比 Upon
在英语中何时使用每一个，包含含义、语域和例句。
At
高频组块A1preposition
On
高频组块A1preposition
Upon
正式10000 以上（较少见）B1preposition
最正式: Upon
| At | On | Upon | |
|---|---|---|---|
| 发音 | 🇬🇧 /["/ət//æt/","/æt/"]/🇺🇸 /["/ət//æt/","/æt/"]/ | 🇬🇧 /["/ɒn/"]/🇺🇸 /["/ɑːn/"]/ | 🇬🇧 /["/əˈpɒn/"]/🇺🇸 /["/əˈpɑːn/"]/ |
| 含义 | A preposition used to show a point in space or time. | A word used to indicate a position or time. | on or at a particular time or place |
| 例句 | She is waiting at the bus stop. | The book is on the table. | mile upon mile of dusty road |
| 语域 | 中性 | 中性 | 正式 |
| 常见程度 | 高频组块 | 高频组块 | 10000 以上（较少见） |
| CEFR 等级 | A1 | A1 | B1 |
| 词性 | preposition | preposition | preposition |
| 搭配 | at home, at work, at the station, at night, at a party | on time, on the table, on the floor, put on, turn on | upon arrival, upon request, upon reflection, upon hearing, upon completion |
| 反义 | away, out | off, out, under | after, below, underneath |
| 常见错误 | Confused with 'in' when referring to specific locations., Used 'at' when it should be 'on' for days., Incorrectly used 'at' for general areas instead of specific points. | Confused with 'in' (e.g., saying 'The cat is in the roof')., Using 'on' instead of 'at' for specific times (e.g., saying 'We will meet on 5 PM'). | Confused with 'on' in casual speech., Used inappropriately in informal settings., Misunderstood as a preposition that can replace any instance of 'on'. |
| 用法说明 | Use 'at' for specific locations or times. Avoid using it for broad areas (use 'in') or for days (use 'on'). | Used to specify location (e.g., 'The book is on the table') or time (e.g., 'We meet on Monday'). It's not used for 'in' or 'at' when describing other locations or times. | Used in more formal contexts, often in writing. Not commonly used in everyday spoken English. Avoid in casual conversations. |
常见问题：At 对比 On 对比 Upon
At、On和Upon 有什么区别？
At: A preposition used to show a point in space or time. On: A word used to indicate a position or time. Upon: on or at a particular time or place
哪个更正式：At、On和Upon？
Upon 是其中最正式的。
哪个更高级：At、On和Upon？
Upon 级别最高，在 CEFR 量表上为 B1。
At、On和Upon 的 CEFR 等级相同吗？
在 CEFR 量表上：At: A1, On: A1, Upon: B1。
At、On和Upon 是什么词性？
At: preposition, On: preposition, Upon: preposition.
能各给一个例子吗？
At: She is waiting at the bus stop. On: The book is on the table. Upon: mile upon mile of dusty road
我可以互换使用 At、On和Upon 吗？
不总是。At、On和Upon 相关，有时可以互换，但在语域、常见程度和用法上不同，所以换用可能改变意思或语气。替换前先看看上面的区别。