【notonlybutalso句首倒装用法】在英语语法中，“not only... but also...”是一个常见的并列结构，用于强调两个并列的成分。当这个结构位于句首时，句子通常需要使用倒装语序，以符合英语的表达习惯。这种倒装形式不仅增强了句子的语气，还使语言更加正式和自然。
以下是对“not only... but also...”句首倒装用法的总结，并通过表格形式进行清晰展示。
一、基本结构与规则
| 结构类型 | 正常语序（非倒装） | 倒装语序（句首使用 not only... but also...） |
| 主语 + 谓语 + 宾语 | He likes apples and oranges. | Not only does he like apples, but he also likes oranges. |
| 主语 + 系动词 + 表语 | She is intelligent and hardworking. | Not only is she intelligent, but she is also hardworking. |
| 动词 + 宾语 + 其他 | They enjoy music and sports. | Not only do they enjoy music, but they also enjoy sports. |
二、倒装规则说明
1. 主语为单数或复数名词/代词：
- 当主语是单数时，助动词用 does 或 is；
- 当主语是复数时，助动词用 do 或 are。
2. 谓语动词的时态：
- 倒装句中的动词需与原句保持一致的时态。例如：
- 原句：He has finished the work.
- 倒装句：Not only has he finished the work, but he also did it quickly.
3. 注意“but also”后的
- “but also”后的部分通常不需要倒装，除非它本身也是一个复杂结构。
三、常见错误与注意事项
| 错误示例 | 正确形式 | 说明 |
| Not only he likes apples, but he also likes oranges. | Not only does he like apples, but he also likes oranges. | 句首使用 not only 时，需倒装。 |
| Not only is she beautiful and smart, but also she is kind. | Not only is she beautiful and smart, but she is also kind. | “but also”后不需要倒装，但需补全动词。 |
| Not only they are happy, but also they are excited. | Not only are they happy, but they are also excited. | “but also”后应使用完整结构。 |
四、实际应用举例
| 句子 | 倒装形式 | 说明 |
| She sings and dances well. | Not only does she sing, but she also dances well. | 强调两个动作。 |
| The teacher explained clearly and patiently. | Not only did the teacher explain clearly, but he also did so patiently. | 强调教学态度。 |
| He passed the exam and got a scholarship. | Not only did he pass the exam, but he also got a scholarship. | 强调双重结果。 |
五、总结
“not only... but also...”句首倒装是一种常见的英语语法现象，适用于强调两个并列成分。掌握其倒装规则有助于提高语言表达的准确性和地道性。通过合理使用这一结构，可以使句子更具逻辑性和表现力。
| 关键点 | 内容 |
| 倒装条件 | “not only... but also...”位于句首 |
| 倒装方式 | 助动词 + 主语 + 谓语动词 |
| 注意事项 | “but also”后不倒装，需补全动词 |
| 应用场景 | 强调两个并列事实或特征 |
如需进一步练习或了解其他倒装结构，可结合具体语境进行分析和模仿。
