Turnitin AIGC检测的核心逻辑是识别“机器化的语言表达和逻辑结构”，因此降重的关键在于通过“句式重构”和“语义重构”，让论文呈现出“人工原创”的特征。以下是详细的重构指南，结合具体案例说明操作方法，帮助大家精准降低检测率。
一、句式重构：打破AI固定句式模板
AI生成的英文句子多遵循固定模板，如“主语+情态动词+动词+宾语”“被动语态过度使用”等，句式重构需从“句式类型”“语序”“语态”三个维度入手。
1. 句式类型多样化：将简单句改为复合句或复杂句，合理加入从句。例：原AI句“AI has advantages. It also has disadvantages.”改写为“Although artificial intelligence boasts numerous advantages, it is not without drawbacks.”
2. 调整语序：改变句子的主谓宾顺序，或把状语、定语提前/后置。例：原AI句“Researchers have developed a new AI technology recently.”改写为“Recently, a new artificial intelligence technology has been developed by researchers.”
3. 语态合理搭配：AI过度依赖被动语态，重构时可根据语境灵活切换主动与被动语态。例：原AI句“The data was analyzed by AI.”改写为“Artificial intelligence analyzed the data, and the results were verified by researchers.”
二、语义重构：保留核心信息，优化表达逻辑
语义重构不是“改变核心观点”，而是在保留关键信息（如数据、结论、专业术语）的前提下，用自己的逻辑重新组织内容，融入个人理解。
1. 提炼核心信息：先将AI生成段落的关键信息提取出来，如“研究对象、研究方法、实验结果、结论”等，删除冗余的修饰词和套话。例：原AI段落“With the rapid development of the Internet, more and more people use online shopping. A survey shows that 60% of people prefer online shopping because it is convenient. This phenomenon has promoted the development of e-commerce.”提炼核心信息：“Online shopping is popular due to convenience (60% people prefer it), promoting e-commerce development.”
2. 重构表达逻辑：用自己的逻辑重新串联核心信息，可加入“个人解读”或“案例补充”。例：基于上述核心信息，改写为“60% of consumers tend to choose online shopping, a trend driven by the convenience it offers in the context of the booming Internet. This preference has not only transformed people's consumption habits but also fueled the vigorous development of the e-commerce industry.”
3. 语义重构验证：完成重构后，需检查两个要点：核心信息是否完整保留、逻辑是否通顺。推荐使用Turnitin AIGC检测系统：tuai.qkcnki.com验证重构效果，若仍标红，说明重构未彻底打破AI逻辑，需再次优化。对于效率需求较高的同学，可使用自动降AIGC率工具：aigc.qkcnki.com，其语义重构功能可提供多种优化方案，供选择后人工微调。