知识扩展
易混词辨析
introduced、presented、launched
1.introduced(形容词 / 动词过去分词):“介绍的;引进的;推出的”(如 introduced himself 自我介绍;introduced new technology 引进新技术;introduced a new product 推出新产品),多义需区分 “动作对象”;
2. presented(动词过去分词):“呈现的;赠送的;提出的”(如 presented a report 提交报告;presented a gift 赠送礼物;presented ideas 提出想法),侧重 “正式呈现或赠送”,introduced 是 “介绍、引进或推出”;
3. launched(动词过去分词):“发起的;推出的”(如 launched a campaign 发起活动;launched a ship 下水船舶;launched a product 推出产品),侧重 “大型项目或产品的正式启动”,introduced 是 “一般的推出或引进”;
4. introduced(形容词):“引进的;推出的”(如 introduced species 引进物种;introduced brand 推出的品牌),可指 “生物领域的引进物种”,presented/launched 无此 “生物领域” 义。