帮我用专业性的语言改写这段话使得重复率更低：PPP模式的引进缓解了政府基础设施建设资金不足的压力促进了相关设施的建设进程。但随着公路建设程度的加深后期规划建设的部分公路项目效益较差如何在提供最少的可行性缺口补助的情况下满足项目效益指标这一问题将成为项目效益测算的重点。本论文通过实例验证不同补贴方式对项目效益的影响以期对公路项目立项、社会资本方选择具有一定帮助。

The introduction of PPP model has alleviated the pressure of insufficient government funding for infrastructure construction and facilitated the construction process of relevant facilities. However, as the level of road construction deepens, the benefits of some post-planned road projects are poor. Therefore, the key issue in project benefit calculation is how to meet the project benefit indicators with the minimum feasible gap subsidy. This paper aims to verify the impact of different subsidy methods on project benefits through examples, in order to provide certain assistance for the approval of highway projects and the selection of social capital parties.