Cool MateAgo 对比 Before 对比 Previously
在英语中何时使用每一个，包含含义、语域和例句。
Ago
前 1000（非常常见）A1adverb
Before
前 1000（非常常见）A1preposition
Previously
前 2000（常见）B1adverb
| Ago | Before | Previously | |
|---|---|---|---|
| 发音 | 🇬🇧 /["/əˈɡəʊ/"]/🇺🇸 /["/əˈɡəʊ/"]/ | 🇬🇧 /["/bɪˈfɔː(r)/"]/🇺🇸 /["/bɪˈfɔːr/"]/ | 🇬🇧 /["/ˈpriːviəsli/"]/🇺🇸 /["/ˈpriːviəsli/"]/ |
| 含义 | 在过去；在现在之前in the past; before now | At an earlier time than something else. | 在现在之前；更早。Before now; earlier. |
| 例句 | two weeks/months/years ago | I always wash my hands before dinner. | The building had previously been used as a hotel. |
| 语域 | 中性 | 中性 | 中性 |
| 常见程度 | 前 1000（非常常见） | 前 1000（非常常见） | 前 2000（常见） |
| CEFR 等级 | A1 | A1 | B1 |
| 词性 | adverb | preposition | adverb |
| 搭配 | two years ago, just ago, long ago | before dinner, before school, before sunrise | previously mentioned, previously discussed, previously stated, previously introduced, previously reported |
| 反义 | future | after, following | subsequently, afterwards |
| 常见错误 | Incorrectly using 'ago' with future events., Confusing 'ago' with 'since' when discussing past time., Omitting the time expression, e.g., saying 'I saw him ago.' | Confusing 'before' with 'after'., Using 'before' to refer to an event that can only happen afterwards., Omitting the necessary clause or event after 'before'. | Using 'previous' instead of 'previously' in a sentence., Confusing 'previously' with 'currently' which means now., Misplacing 'previously' in a sentence and changing the meaning. |
| 用法说明 | 使用'之前'来指代过去的特定时间。通常用于非正式和中性语境，但在非常正式的写作或演讲中应避免使用。Use 'ago' to refer to a specific time in the past. It's typically used in informal and neutral contexts, but avoid using it in very formal writing or speeches. | Used to indicate a time prior to an event or action. Common in both spoken and written language. Avoid using it in extremely formal writing; in that context, consider 'prior to'. | 使用'之前'来连接过去的事件与现在。适用于口语和书面语，但在随意对话中可能听起来太正式。Use 'previously' to connect past events with the present. It's suitable for both spoken and written contexts but may sound too formal in casual conversations. |
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常见问题：Ago 对比 Before 对比 Previously
Ago、Before和Previously 有什么区别？
Ago: in the past; before now Before: At an earlier time than something else. Previously: Before now; earlier.
哪个更高级：Ago、Before和Previously？
Previously 级别最高，在 CEFR 量表上为 B1。
Ago、Before和Previously 的 CEFR 等级相同吗？
在 CEFR 量表上：Ago: A1, Before: A1, Previously: B1。
Ago、Before和Previously 是什么词性？
Ago: adverb, Before: preposition, Previously: adverb.
能各给一个例子吗？
Ago: two weeks/months/years ago Before: I always wash my hands before dinner. Previously: The building had previously been used as a hotel.
我可以互换使用 Ago、Before和Previously 吗？
不总是。Ago、Before和Previously 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。