Cool MateThat's why 对比 Therefore
在英语中何时使用每一个，包含含义、语域和例句。
That's why
前 1000（非常常见）
Therefore
正式前 2000（常见）B1adverb
最正式: Therefore最常见: That's why
| That's why | Therefore | |
|---|---|---|
| 发音 | 🇬🇧 //ðæts waɪ//🇺🇸 //ðæts waɪ// | 🇬🇧 /["/ˈðeəfɔː(r)/"]/🇺🇸 /["/ˈðerfɔːr/"]/ |
| 含义 | 这就是原因。This is the reason. | For that reason; as a result. |
| 例句 | The project was delayed. That's why we need an extension. | He's only 17 and therefore not eligible to vote. |
| 语域 | 中性 | 正式 |
| 常见程度 | 前 1000（非常常见） | 前 2000（常见） |
| CEFR 等级 | - | B1 |
| 词性 | adverb | |
| 搭配 | that's why I, that's why we, that's why she, that's why they, that's why he | therefore concluded, therefore it follows, therefore we can, therefore you should, therefore the result |
| 反义 | - | however, nevertheless, nonetheless |
| 常见错误 | 'That's why' is sometimes confused with 'that's because', which has a slightly different use., Learners often forget to follow 'that's why' with a clear explanation., Some may use 'that's why' in overly formal contexts, where a more precise term is needed. | 'Therefore' is sometimes confused with 'therefor', which has a different meaning., Learners may use 'therefore' to start a sentence in informal contexts, which can sound awkward., 'Therefore' may be incorrectly placed in a sentence away from the cause or condition. |
| 用法说明 | 用 'that's why' 来解释或说明一个陈述。它适用于口语和非正式写作，但在论文中可能显得不够正式。Use 'that's why' to explain or justify a statement. It's suitable for conversation and informal writing, but may be less formal in essays. | Use 'therefore' to connect ideas in formal writing or speech. It’s less common in everyday conversation and can sound stiff. Avoid it in casual contexts. |
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常见问题：That's why 对比 Therefore
That's why和Therefore 有什么区别？
That's why: This is the reason. Therefore: For that reason; as a result.
哪个更正式：That's why和Therefore？
Therefore 是其中最正式的。
哪个更常见：That's why和Therefore？
That's why 在日常英语中最常见。
能各给一个例子吗？
That's why: The project was delayed. That's why we need an extension. Therefore: He's only 17 and therefore not eligible to vote.
我可以互换使用 That's why和Therefore 吗？
不总是。That's why和Therefore 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。