医学论文英文摘要部分的常用句型2 ）研究背景的表达n 已有报道/ 记载：n has been reported/recorded.n 已证明：There is evidence that/ It has been proved thatn 3 ）研究目的的表达n 为了：to+ 动词（常用动词：study ，investigate, evaluate, observe, clarify, explore, understand, examine, inquire into, elucidate, etc. ）;in an effort/attempt ton 为了弄清的关系：To find out the relationship between and n 本研究旨在：be to do The purpose/objective/aim of this study was/This study aimed at/The study was designed to n 本研究的目的是：The primary purpose of this study was to n 表示“研究”的词语
