D.与现有发现(若有)进行比较(comparison in the context of other studies)

　　E.意义(suggested meaning)

　　F.结论(conclusion)

　　G.前瞻研究(future studies)

　　结论往往是论文中最长也是最难写的部分，主要原因是作者要对研究结果和发现进行分析、推断、演绎和推理，要求作者具有很强逻辑思维能力和英语文字组织能力。此外，这部分时态比较复杂，要分清实验过程和结果(过去时)与分析意见(确定：现在时;不确定或假设：过去时)的区别;他人研究结果(过去时或现在完成时)与本研究结果(过去时)的区别;普遍适用的结论(现在时)与只适用本研究的结论(过去时)的其别等。因此，对于however, may, might, could, would, possibly, probably, be likely to 等词(组)的使用以及we believe (think / consider) that, to our knowledge, in our experience (practice) 等插入语的使用就显得格外重要。

　　示例：

　　Parenteral nutrition is being used with increasing frequency as a primary source of caloric support in adult and pediatric patients with gastrointestinal problems. Numerous complications have been associated with the administration of TPN, including a significantly increased incidence of gallbladder disease [3-5,7]. The data here suggest that cholecystectomy is often required for the management of symptomatic gallbladder disease in this group of patients, and is associated with significant risks.【说明研究背景，包括意义】

　　Of the 35 patients who required cholecystectomy for TPN-induced gallbladder disease, operative morbidity and mortality were 54 percent and 11 percent, respectively. Maingot [8] has stated that cholecystectomy "is one of the simplest and safest of the abdominal operations, and is associated with a low operative mortality rate (about 0.5 percent). A review of the pediatric literature suggests that when cholecystectomy is performed in children, the operative morbidity is less than 10 percent, and the mortality is less than 1 percent. [8,9] Glenn [11] has reported a mortality rate of less than 0.1 percent in over 5,000 patients under the age of 50 years who underwent cholecystectomy. The morbidity and mortality observed in our group of receiving long-term TPN, therefore, were far in excess of what would be expected for a population of patients whose mean age was 29 years. 【提出本研究主要发现并将其与其他研究发现相比较】

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