【notonlybutalso句首倒装用法】在英语语法中，"not only... but also..." 是一个常见的连接结构，用于强调两个并列的成分。当这个结构出现在句首时，句子通常需要使用倒装语序，以符合英语的表达习惯。这种倒装形式不仅使语言更正式、更地道，还能增强语气，突出强调的部分。
一、
“Not only... but also...” 结构如果放在句首，会引起主谓倒装。其基本结构为：
Not only + 主语 + 动词 + ... but also + 主语 + 动词...
需要注意的是，倒装后的句子中，两个主语的位置可能会发生变化，但动词的形式仍需保持一致。此外，这种倒装通常用于书面语或较为正式的场合，口语中较少使用。
例如：
- Not only did he pass the exam, but he also got a scholarship.
（他不仅通过了考试，还获得了奖学金。）
- Not only is she intelligent, but she is also very hardworking.
（她不仅聪明，而且非常勤奋。）
这类句子在写作中可以提升语言的层次感和逻辑性，是提高英语表达能力的重要技巧之一。
二、表格展示
| 用法类型 | 原句结构 | 倒装结构 | 示例 |
| 句首倒装 | He passed the exam and got a scholarship. | Not only did he pass the exam, but also he got a scholarship. | Not only did he pass the exam, but also he got a scholarship. |
| 句首倒装 | She is smart and hardworking. | Not only is she smart, but also she is hardworking. | Not only is she smart, but also she is hardworking. |
| 句首倒装 | They arrived late and missed the meeting. | Not only did they arrive late, but also they missed the meeting. | Not only did they arrive late, but also they missed the meeting. |
三、注意事项
1. 倒装必须发生在句首：只有当 "not only... but also..." 放在句首时，才需要倒装。
2. 主谓顺序改变：动词要提前到主语前，形成倒装结构。
3. 保持一致性：前后分句的时态和结构应保持一致。
4. 避免重复：在实际写作中，可以适当省略后半部分的主语，以避免重复。
例如：
- Not only did I enjoy the movie, but I also recommended it to my friends.
四、小结
“Not only... but also...” 的句首倒装是英语中一种重要的语法现象，适用于正式或书面表达。掌握这一用法，不仅能提升语言的准确性，还能增强表达的逻辑性和感染力。通过练习和积累，可以更加自然地运用这一结构，让语言更具表现力。
