【什么是连接副词】在英语语法中，连接副词（conjunctive adverbs）是一种特殊的副词，它们不仅具有副词的功能，还能够起到连接句子或从句的作用。连接副词常用于连接两个独立分句，使句子结构更加连贯、逻辑更清晰。
连接副词通常出现在句中或句尾，前面常有逗号隔开。它们可以帮助表达时间、因果、对比、条件等关系。常见的连接副词包括：however, therefore, moreover, furthermore, consequently, nevertheless, instead, thus, hence, accordingly 等。
下面是对连接副词的总结与常见用法的表格：
| 连接副词 | 作用类型 | 示例句子 |
| however | 对比 | He was tired. However, he continued working. |
| therefore | 因果 | It rained all day. Therefore, the match was canceled. |
| moreover | 补充 | She is intelligent. Moreover, she is very hardworking. |
| furthermore | 补充 | He has a good job. Furthermore, he has a great salary. |
| consequently | 因果 | He didn’t study. Consequently, he failed the exam. |
| nevertheless | 转折 | It was raining. Nevertheless, we went out. |
| instead | 替代 | I don’t like coffee. Instead, I prefer tea. |
| thus | 因果 | The plan was risky. Thus, it was not approved. |
| hence | 因果 | He was late. Hence, he missed the meeting. |
| accordingly | 结果 | The report was submitted. Accordingly, the meeting was scheduled. |
使用连接副词时需要注意以下几点：
1. 位置：连接副词一般位于句子中间或句尾，前后通常有逗号。
2. 功能：它们可以替代一些连词（如“but”、“and”），但不能单独连接两个独立分句。
3. 语气：连接副词多用于正式或书面语中，口语中较少使用。
总之，连接副词是提升写作逻辑性和语言表达能力的重要工具。掌握它们的使用方法，有助于写出更流畅、更专业的英文句子。
