【正文】 一、目的 objective / aim/ purpose /goal (s) 一、目的構(gòu)成 （ 1）目的 （ 2）背景＋目的 二、目的常用時(shí)態(tài) （ 1）背景：一般現(xiàn)在時(shí)、現(xiàn)在完成時(shí) （ 2）目的：一般現(xiàn)在時(shí)，現(xiàn)在完成時(shí)，或一般過去時(shí) 舉例： （ 1） To evaluate the effects on 24hour intragastric pH levels of infusions with omeprazole and H2 receptor antagonists in bleeding duodenal ulcer patients. （ 2） The role of omeprazole in triple therapy and the impact of Helicobacter pylori resistance on treatment oute are not established. This study investigated the role of omeprazole and influence of primary H. pylori resistance on eradication and development of secondary resistance. 目的中 描述背景 常用句型 ? 表否定 ? remain unclear The impact of… on … is not clearly understood. The role of … in … is unclear …, but the details are unclear It is unclear / unknown whether.. There is/has been little information regarding / about / concerning … 目的中 描述背景 常用句型 ? 表爭議 ? remain controversial equivocal debatable The management of … is controversial ? There are controversies over / have been conflicting results on 目的中 描述背景 常用句型 ? 表肯定 ? Studies have shown that … demonstrated documented ? It has been suggested that … is believed hypothesized postulated assumed 目的中 描述背景 常用句型 ? 表可能 ? … may contributed to … be associated with … be related to … 目的中 介紹目的 常用句型 A 一般過去時(shí)、被動(dòng)語態(tài) ① The purpose of this study was to … aim investigation goal objective ② This study was designed to… undertaken to… performed to… conducted to… carried out to… intended to… 舉例 ? The aim of this study was to determine the protective function of omeprazole on gastric mucosal injury3 ? The present study was designed to establish whether there might be a geic predisposition to an altered pattern of antiinflammatory cytokine produced in patients with irritable bowel syndrome ? Our objective in this report is to examine the clinical feature, pathology and treatment for patients with pancreatic cancer ? An experimental study was conducted using a canine mode to elucidate … 目的中 介紹目的 常用句型 B 動(dòng)詞不定式短語 ? To evaluate … the use of investigate the effect on study how…. examine observe explore analyze determine 目的中 介紹目的 常用句型 B 動(dòng)詞不定式短語 ? To demonstrate … test prove explain elucidate establish develop search for set out 舉例 ? To evaluate sonography as a tool for initial diagnosis in emergency room patients with abdominal trauma. ? To determine if use of omeprazole protects against the gastric mucosal injury 目的中 介紹目的 常用句型 C 一般過去時(shí)、主動(dòng)語態(tài) ? We（ the authors） conducted a study to aimed to attempted to ? To determine… ， we studied… In an attempt to… ， we carried out a study… in order to… ， seeksought 探求、尋求 舉例： We sought to assess